--- loncom/homework/bridgetask.pm	2005/12/01 18:19:17	1.86
+++ loncom/homework/bridgetask.pm	2006/09/28 18:59:11	1.182
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA 
 # definition of tags that give a structure to a document
 #
-# $Id: bridgetask.pm,v 1.86 2005/12/01 18:19:17 albertel Exp $
+# $Id: bridgetask.pm,v 1.182 2006/09/28 18:59:11 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -38,25 +38,28 @@ use Apache::lonlocal;
 use Apache::lonxml;
 use Apache::slotrequest();
 use Time::HiRes qw( gettimeofday tv_interval );
+use lib '/home/httpd/lib/perl/';
+use LONCAPA;
+ 
 
 BEGIN {
-    &Apache::lonxml::register('Apache::bridgetask',('Task','IntroParagraph','Dimension','Instance','InstanceText','Criteria','ClosingParagraph'));
+    &Apache::lonxml::register('Apache::bridgetask',('Task','IntroParagraph','Dimension','Question','QuestionText','Setup','Instance','InstanceText','Criteria','ClosingParagraph'));
 }
 
+my %dimension;
 sub initialize_bridgetask {
     # id of current Dimension, 0 means that no dimension is current 
     # (inside <Task> only)
-    $Apache::bridgetask::dimension='';
+    @Apache::bridgetask::dimension=();
     # list of all Dimension ids seen
-    @Apache::bridgetask::dimensionlist=();
-    # mandatory attribute of all Dimensions seen
-    %Apache::bridgetask::dimensionmandatory=();
+    %Apache::bridgetask::top_dimensionlist=();
     # list of all current Instance ids
-    @Apache::bridgetask::instance=();
+    %Apache::bridgetask::instance=();
     # list of all Instance ids seen in this problem
     @Apache::bridgetask::instancelist=();
     # key of queud user data that we are currently grading
     $Apache::bridgetask::queue_key='';
+    undef(%dimension);
 }
 
 sub proctor_check_auth {
@@ -66,7 +69,7 @@ sub proctor_check_auth {
     
     my @allowed=split(",",$slot->{'proctor'});
     foreach my $possible (@allowed) {
-	my ($puser,$pdom)=(split('@',$possible));
+	my ($puser,$pdom)=(split(':',$possible));
 	if ($puser eq $user && $pdom eq $domain) {
 	    my $authenticated=0;
 	    if ( $slot->{'secret'} =~ /\S/ &&
@@ -79,41 +82,103 @@ sub proctor_check_auth {
 		    $authenticated=1;
 		}
 	    }
-	    if ($authenticated && $type eq 'Task') {
-		my $version=
-		    $Apache::lonhomework::results{'resource.version'}=
-		    ++$Apache::lonhomework::history{'resource.version'};
-		$Apache::lonhomework::results{"resource.$version.checkedin"}=
-		    $user.'@'.$domain;
-		$Apache::lonhomework::results{"resource.$version.checkedin.slot"}=
-		    $slot_name;
-		foreach my $key (keys(%Apache::lonhomework::history)) {
-		    if ($key=~/^resource\.0\./) {
-			$Apache::lonhomework::results{$key}='';
-		    }
-		}
+	    if ($authenticated) {
+		&check_in($type,$user,$domain,$slot_name);
 		return 1;
-	    } elsif ($authenticated && $type eq 'problem') {
-		&Apache::lonxml::debug("authed #slot_name");
-		$Apache::lonhomework::results{"resource.0.checkedin"}=
-		    $user.'@'.$domain;
-		$Apache::lonhomework::results{"resource.0.checkedin.slot"}=
-		    $slot_name;
 	    }
 	}
     }
     return 0;
 }
 
+sub check_in {
+    my ($type,$user,$domain,$slot_name) = @_;
+    my $useslots = &Apache::lonnet::EXT("resource.0.useslots");
+    if ( $useslots eq 'map_map') {
+	&check_in_sequence($user,$domain,$slot_name);
+    } else {
+	&create_new_version($type,$user,$domain,$slot_name);
+    }
+    return 1;
+}
+
+sub check_in_sequence {
+    my ($user,$domain,$slot_name) = @_;
+    my $navmap = Apache::lonnavmaps::navmap->new();
+    my ($symb) = &Apache::lonxml::whichuser();
+    my ($map)  = &Apache::lonnet::decode_symb($symb);
+    my @resources = 
+	$navmap->retrieveResources($map, sub { $_[0]->is_problem() },0,0);
+    my %old_history = %Apache::lonhomework::history;
+    my %old_results = %Apache::lonhomework::results;
+
+    foreach my $res (@resources) {
+	&Apache::lonxml::debug("doing ".$res->src);
+	&Apache::structuretags::initialize_storage($res->symb);
+	my $type = ($res->is_task()) ? 'Task' : 'problem';
+	&create_new_version($type,$user,$domain,$slot_name);
+	&Apache::structuretags::finalize_storage($res->symb);
+    }
+    
+    %Apache::lonhomework::history = %old_history;
+    %Apache::lonhomework::results = %old_results;
+}
+
+sub create_new_version {
+    my ($type,$user,$domain,$slot_name) = @_;
+    
+    my $id = '0';
+    if ($type eq 'Task') {
+	# increment version
+	my $version=
+	    $Apache::lonhomework::history{'resource.0.version'};
+	$version++;
+	&Apache::lonxml::debug("Making version $version");
+	#clean out all current results
+	foreach my $key (keys(%Apache::lonhomework::history)) {
+	    if ($key=~/^resource\.0\./) {
+		$Apache::lonhomework::results{$key}='';
+	    }
+	}
+	
+	#setup new version and who did it
+       	$Apache::lonhomework::results{'resource.0.version'}=$version;
+	$id = "$version.0";
+	if (!defined($user) || !defined($domain)) {
+	    $user = $env{'user.name'};
+	    $domain = $env{'user.domain'};
+	}
+	
+    } elsif ($type eq 'problem') {
+	&Apache::lonxml::debug("authed $slot_name");
+    }
+    if (!defined($user) || !defined($domain)) {
+	$user = $env{'user.name'};
+	$domain = $env{'user.domain'};
+    }
+
+    $Apache::lonhomework::results{"resource.$id.checkedin"}=
+	$user.':'.$domain;
+
+    if (defined($slot_name)) {
+	$Apache::lonhomework::results{"resource.$id.checkedin.slot"}=
+	    $slot_name;
+    }
+}
+
 sub get_version {
     my ($version,$previous);
     if ($env{'form.previousversion'} && 
 	$env{'form.previousversion'} ne 'current' &&
-	defined($Apache::lonhomework::history{'resource.'.$env{'form.previousversion'}.'.status'})) {
+	defined($Apache::lonhomework::history{'resource.'.$env{'form.previousversion'}.'.0.status'})) {
 	$version=$env{'form.previousversion'};
 	$previous=1;
     } else {
-	$version=$Apache::lonhomework::history{'resource.version'};
+	if (defined($Apache::lonhomework::results{'resource.0.version'})) {
+	    $version=$Apache::lonhomework::results{'resource.0.version'};
+	} elsif (defined($Apache::lonhomework::history{'resource.0.version'})) {
+	    $version=$Apache::lonhomework::history{'resource.0.version'};
+	}
 	$previous=0;
     }
     if (wantarray) {
@@ -125,10 +190,10 @@ sub get_version {
 sub add_previous_version_button {
     my ($status)=@_;
     my $result;
-    if ($Apache::lonhomework::history{'resource.version'} eq '') {
+    if ($Apache::lonhomework::history{'resource.0.version'} eq '') {
 	return '';
     }
-    if ($Apache::lonhomework::history{'resource.version'} < 2 &&
+    if ($Apache::lonhomework::history{'resource.0.version'} < 2 &&
 	$status ne 'NEEDS_CHECKIN') {
 	return '';
     }
@@ -139,8 +204,8 @@ sub add_previous_version_button {
 	    "</h3>\n";
     }
     my @to_show;
-    foreach my $test_version (1..$Apache::lonhomework::history{'resource.version'}) {
-	if (defined($Apache::lonhomework::history{'resource.'.$test_version.'.status'})) {
+    foreach my $test_version (1..$Apache::lonhomework::history{'resource.0.version'}) {
+	if (defined($Apache::lonhomework::history{'resource.'.$test_version.'.0.status'})) {
 	    push(@to_show,$test_version);
 	}
     }
@@ -148,7 +213,7 @@ sub add_previous_version_button {
 	join("</option>\n<option>",@to_show).
 	     "</option>\n";
     $list.='<option value="current">'.&mt('Current').'</option>';
-    $result.='<form name="getprevious" method="POST" action="';
+    $result.='<form name="getprevious" method="post" action="';
     my $uri=$env{'request.uri'};
     if ($env{'request.enc'}) { $uri=&Apache::lonenc::encrypted($uri); }
     $result.=$uri.'">'.
@@ -163,16 +228,16 @@ sub add_grading_button {
     my (undef,$cid)=&Apache::lonxml::whichuser();
     my $cnum=$env{'course.'.$cid.'.num'};
     my $cdom=$env{'course.'.$cid.'.domain'};
-    my %sections;
-    my $numsections=&Apache::loncommon::get_sections($cdom,$cnum,\%sections);
+    my %sections = &Apache::loncommon::get_sections($cdom,$cnum);
+
     my $size=5;
     if (scalar(keys(%sections)) < 3) {
 	$size=scalar(keys(%sections))+2;
     }
-    my $sec_select = '<select multiple name="chosensections" size="'.$size.'">'."\n";
+    my $sec_select = '<select multiple="multiple" name="chosensections" size="'.$size.'">'."\n";
     $sec_select .= "<option value='all' selected='selected'>all</option>\n";
     foreach my $sec (sort {lc($a) cmp lc($b)} (keys(%sections))) {
-	$sec_select .= "<option name=\"$sec\">$sec</option>\n";
+	$sec_select .= "<option value=\"$sec\">$sec</option>\n";
     }
     $sec_select .= "<option value='none'>none</option></select>\n";
     
@@ -181,18 +246,32 @@ sub add_grading_button {
     $result.='<input type="hidden" name="grade_target" value="webgrade" />';
     if (&Apache::lonnet::allowed('mgq',$env{'request.course.id'})) {
 	my ($entries,$ready,$locks)=&get_queue_counts('gradingqueue');
-	$result.='<p>Specify a section: '.$sec_select.'</p>';
-	$result.='<p>'.&mt("Grading Queue has [_1] entries. [_2] of them are ready to be graded and [_3] of them are currently being graded",$entries,$ready,$locks);
+	$result.='<table><tr>';
+	$result.='<td rowspan="4">Specify a section: </td><td rowspan="4">'.$sec_select.'</td>';
+	$result.='<td>'.' <input type="submit" name="reviewagrading" value="'.
+	    &mt("Select an entry from the grading queue:").'" /> ';
 
-	$result.=' <input type="submit" name="reviewagrading" value="'.
-	    &mt("Select an entry from the grading queue").'" /> </p>'."\n";
+	$result.= &mt("[_1] entries, [_2] ready, [_3] being graded",$entries,$ready,$locks).' </td></tr>'."\n";
 
 	($entries,$ready,$locks)=&get_queue_counts('reviewqueue');
-	$result.='<p>'.&mt("Review Queue has [_1] entries. [_2] of them are ready to be graded and [_3] of them are currently being graded",$entries,$ready,$locks);
-	$result.=' <input type="submit" name="reviewasubmission" value="'.
-	    &mt("Select an entry from the review queue").'" /> </p>'."\n";
-	$result.=' <input type="submit" name="regradeasubmission" value="'.
-	    &mt("Select a user to regrade.").'" /> </p>'."\n";
+	$result.='<tr><td>'.
+	    ' <input type="submit" name="reviewasubmission" value="'.
+	    &mt("Select an entry from the review queue:").'" /> ';
+	$result.=&mt("[_1] entries, [_2] ready, [_3] being graded",
+		     $entries,$ready,$locks).'</td></tr>'."\n";
+	$result.='<tr><td> <input type="submit" name="regradeasubmission" value="'.
+	    &mt("List of user's grade status").'" /> </td></tr></table>'."\n";
+	$result.='<p> <input type="submit" name="regradeaspecificsubmission" value="'.
+	    &mt("Regrade specific user:").'" />'."\n";
+	$result.='<input type="text" size="12" name="gradinguser" />';
+	$result.=&Apache::loncommon::select_dom_form($env{'user.domain'},
+						     'gradingdomain');
+	$result.=' '.
+	    &Apache::loncommon::selectstudent_link('gradesubmission',
+						   'gradinguser',
+						   'gradingdomain');
+	$result.=&Apache::loncommon::studentbrowser_javascript();
+	$result.= '</p>';
     }
     return $result;
 }
@@ -202,6 +281,12 @@ sub add_request_another_attempt_button {
     if (!$text) { $text="Request another attempt"; }
     my $result;
     my $symb=&Apache::lonnet::symbread();
+    # not a slot access based resource
+    my $useslots = &Apache::lonnet::EXT("resource.0.useslots",$symb);
+    if ($useslots =~ /^\s*no\s*$/i) {
+	return '';
+    }
+
     my ($slot_name,$slot)=&Apache::slotrequest::check_for_reservation($symb);
     my $action='get_reservation';
     if ($slot_name) {
@@ -215,8 +300,8 @@ STUFF
     }
     
     if ($env{'request.enc'}) { $symb=&Apache::lonenc::encrypted($symb); }
-    $symb=&Apache::lonnet::escape($symb);
-    $result.='<form method="POST" action="/adm/slotrequest">'.
+    $symb=&escape($symb);
+    $result.='<form method="post" action="/adm/slotrequest">'.
 	'<input type="hidden" name="symb" value="'.$symb.'" />'.
 	'<input type="hidden" name="command" value="'.$action.'" />'.
 	'<input type="submit" name="requestattempt" value="'.
@@ -238,64 +323,14 @@ sub preserve_grade_info {
 }
 
 sub style {
-    return (<<STYLE);
-<style type="text/css">
-.fail, .pass, .neutral {
-    position: relative;
-    margin : 5px;
-    margin-bottom :10px;
-    padding : 4px;
-    padding-left : 75px;
-	border : thin solid;
-    font-weight : bolder;
-    font-size: smaller;
-    font-family: Arial;
-    background-color : rgb(255,240,225);
-}
-
-.fail h4, .pass h4 {
-	position:absolute;
-	left: -4px;
-	top: -8px;
-	padding:2px;
-	margin:0;
-	background-color : rgb(255,240,225);
-	border : thin solid;
-}
-
-.fail {
-	color: red;
-}
-
-.pass {
-    color : green;
-}
-
-.neutral {
-	color : blue;
-}
-
-.question {
-	border : thin solid black;
-	padding : 4px;
-	margin-bottom : 1em;
-}
-
-.grade {
-	font-size: x-large;
-	font-family: Arial;
-	position:absolute;
-	left: 5px;
-	top: -5px;
-	width: 70px;
-}
-
-div#feedback h1 {
-    color : inherit;
-}
-</style>
+    my ($target) = @_;
+    if ($target eq 'web'
+	|| $target eq 'webgrade') {
+	return (<<STYLE);
+<link rel="stylesheet" type="text/css" href="/res/adm/includes/task.css" />
 STYLE
-
+    }
+    return;
 }
 
 sub show_task {
@@ -307,13 +342,46 @@ sub show_task {
 		       ( $status eq 'NOT_IN_A_SLOT') ||
 		       ( $status eq 'NEEDS_CHECKIN') ||
 		       ( $status eq 'WAITING_FOR_GRADE') ||
-		       ( $status eq 'INVALID_ACCESS') )) {
+		       ( $status eq 'INVALID_ACCESS') ||
+		       ( &get_version() eq ''))) {
 	return 0;
     }
     if ($env{'form.donescreen'}) { return 0; }
     return 1;
 }
 
+my @delay;
+sub nest { 
+    if (@delay) {
+	return $delay[-1];
+    } else {
+	return;
+    }
+}
+
+sub nested_parse {
+    my ($str,$env,$args) = @_;
+    my @old_env = @Apache::scripttag::parser_env;
+    @Apache::scripttag::parser_env = @$env;
+    if (exists($args->{'set_dim_id'})) {
+	&enable_dimension_parsing($args->{'set_dim_id'});
+    }
+    push(@delay,(($args->{'delayed_dim_results'})? 1 : 0));
+    my $result = &Apache::scripttag::xmlparse($$str);
+    pop(@delay);
+    if (exists($args->{'set_dim_id'})) {
+	&disable_dimension_parsing();
+    }
+    @Apache::scripttag::parser_env = @old_env;
+    if ($args->{'delayed_dim_results'}) {
+	my $dim = &get_dim_id();
+	&Apache::lonxml::debug(" tossing out $result ");
+	&Apache::lonxml::debug(" usining out $dim 's  ". $dimension{$dim}{'result'});
+	return $dimension{$dim}{'result'};
+    }
+    return $result;
+}
+
 sub internal_location {
     my ($id)=@_;
     return '<!-- LONCAPA_INTERNAL_ADD_TASK_STATUS'.$id.' -->';
@@ -322,70 +390,156 @@ sub internal_location {
 sub submission_time_stamp {
     my ($symb,$courseid,$udom,$uname)=&Apache::lonxml::whichuser();
     my $submissiontime;
-    my $version=$Apache::lonhomework::history{'resource.version'};
+    my $version=$Apache::lonhomework::history{'resource.0.version'};
     for (my $v=$Apache::lonhomework::history{'version'};$v>0;$v--) {
 	if (defined($Apache::lonhomework::history{$v.':resource.'.$version.'.0.bridgetask.portfiles'})) {
 	    $submissiontime=$Apache::lonhomework::history{$v.':timestamp'};
+	    last;
 	}
     }
     my $result;
     if ($submissiontime) {
-	my $slot_name=$Apache::lonhomework::history{'resource.'.$version.'.checkedin.slot'};
+	my $slot_name=$Apache::lonhomework::history{'resource.'.$version.'.0.checkedin.slot'};
 	my %slot=&Apache::lonnet::get_slot($slot_name);
 	my $diff = $slot{'endtime'} - $submissiontime;
 	my ($color,$when)=('#FF6666','after');
 	if ($diff > 0) { ($color,$when)=('#336600','before'); }
 	my $info;
+	$diff = abs($diff);
 	if ($diff%60) { $info=($diff%60).' seconds'; }
 	$diff=int($diff/60);
 	if ($diff%60) { $info=($diff%60).' minutes '.$info; }
 	$diff=int($diff/60);
 	if ($diff) {    $info=$diff.' hours '.$info; }
 	$result='<p><font color="'.$color.'">'.
-	    &mt('Student submitted [_1] [_2] the deadline. 
-                 (Submission was at [_3], end of period was [_4].)',
-		$info,$when,scalar(localtime($submissiontime)),
-		scalar(localtime($slot{'endtime'}))).
+	    &mt('Student submitted [_1] [_2] the deadline. '.
+		'(Submission was at [_3], end of period was [_4].)',
+		$info,$when,
+		&Apache::lonlocal::locallocaltime($submissiontime),
+		&Apache::lonlocal::locallocaltime($slot{'endtime'})).
 		'</font></p>';
     }
     return $result;
 }
 
-sub webgrade_standard_info {
-    my ($version)=&get_version();
-    my (undef,undef,$udom,$uname) = &Apache::lonxml::whichuser();
+sub file_list {
+    my ($files,$uname,$udom) = @_;
+    if (!defined($uname) || !defined($udom)) {
+	(undef,undef,$udom,$uname) = &Apache::lonxml::whichuser();
+    }
     my $file_url = '/uploaded/'.$udom.'/'.$uname.'/portfolio/';
-    my $file_list="<ul>\n";
-    foreach my $partial_file (split(',',$Apache::lonhomework::history{"resource.$version.0.bridgetask.portfiles"})) {
+
+    my $file_list="<ul class=\"LC_GRADING_handininfo\">\n";
+    foreach my $partial_file (split(',',$files)) {
 	my $file=$file_url.$partial_file;
 	$file=~s|/+|/|g;
 	&Apache::lonnet::allowuploaded('/adm/bridgetask',$file);
-	$file_list.='<li><nobr><a href="'.$file.'?rawmode=1" target="lonGRDs"><img src="'.
-	    &Apache::loncommon::icon($file).'" border=0"> '.$file.
-	    '</a></nobr></li>'."\n";
+	$file_list.='<li><span style="white-space: nowrap;"><a href="'.$file.'?rawmode=1" target="lonGRDs"><img src="'.
+	    &Apache::loncommon::icon($file).'" alt="file icon" border="0" /> '.$file.
+	    '</a></span></li>'."\n";
     }
     $file_list.="</ul>\n";
+    return $file_list;
+}
+
+sub grade_mode {
+    if ($env{'form.regrade'} || $env{'form.regradeaspecificsubmission'}) {
+	return 'regrade';
+    }
+    return 'queue_grade';
+}
+
+sub webgrade_standard_info {
+    my ($version)=&get_version();
+
+    my $file_list = &file_list($Apache::lonhomework::history{"resource.$version.0.bridgetask.portfiles"});
+
+    my %lt=('done'   => 'Next Item',
+	    'stop'   => 'Quit Grading',
+	    'fail'   => 'Fail Rest',
+	    'cancel' => 'Cancel',
+	    );
+    %lt=&Apache::lonlocal::texthash(%lt);
 
-    my %lt=&Apache::lonlocal::texthash('done' => 'Done',
-				       'stop' => 'Stop',
-				       );
-				       
     my $result=<<INFO;
-<div class="handininfo">
-  <input type="submit" name="next" value="$lt{'done'}" />
-  <input type="submit" name="stop" value="$lt{'stop'}" />
+  <div class="LC_GRADING_maincontrols">
+INFO
+
+    if (&grade_mode() eq 'regrade') {
+	$result.=<<INFO;
+    <input type="submit" name="cancel" value="$lt{'cancel'}" />
+INFO
+    }
+
+    $result.=<<INFO;
+    <input type="submit" name="next" value="$lt{'done'}" />
+    <input type="submit" name="stop" value="$lt{'stop'}" />
+    <input type="button" name="fail" value="$lt{'fail'}" 
+           onclick="javascript:onFailRest()" />
+  </div>
   $file_list
-</div>
 INFO
     return $result;
 }
 
+sub done_screen {
+    my ($version) = @_;
+    my $title=&Apache::lonnet::gettitle();
+    my @files=split(',',$Apache::lonhomework::history{'resource.'.$version.'.0.bridgetask.portfiles'});
+    my (undef,undef,$domain,$user)= &Apache::lonxml::whichuser();
+    my $files = '<ul>';
+    my $msg;
+    foreach my $file (@files) {
+	my $url="/uploaded/$domain/$user/portfolio$file";
+	if (! &Apache::lonnet::stat_file($url)) {
+	    $file = &mt('<span class="LC_error"> Nonexistent file:</span> '.
+			'<span class="LC_filename">[_1]</span>',$file);
+	    $msg .= "<p>Submitted non-existant file $file</p>\n";
+	} else {
+	    $file = '<span class="LC_filename">'.$file.'</span>';
+	    $msg .= "<p>Submitted file $file</p>\n";
+	}
+	$files .= '<li>'.$file.'</li>';
+    }
+    $files.='</ul>';
+    my $subject = "Submission message for $title";
+    my ($message_status,$comment_status);
+    my $setting = $env{'course.'.$env{'request.course.id'}.'.task_messages'};
+    $setting =~ s/^\s*(\S*)\s*$/$1/;
+    $setting = lc($setting);
+    if ($setting eq 'only_student'
+	|| $setting eq 'student_and_user_notes_screen') {
+	$message_status =
+	    &Apache::lonmsg::user_normal_msg($user,$domain,$subject,$msg);
+	$message_status = '<p>'.&mt('Message sent to user: [_1]',
+				    $message_status).' </p>';
+    }
+    if ($setting eq 'student_and_user_notes_screen') {
+	$comment_status = 
+	    &Apache::lonmsg::store_instructor_comment($subject.'<br />'.
+						      $msg,$user,$domain);
+	$comment_status = '<p>'.&mt('Message sent to instructor: [_1]',
+				    $comment_status).' </p>';
+    }
+    return <<DONESCREEN;
+<h2>$title</h2>
+<p> Files submitted: $files </p>
+<p> You are now done with this Bridge Task </p>
+<hr />
+<p> <a href="/adm/logout">Logout</a> </p>
+<p> <a href="/adm/roles">Change to a different course</a> </p>
+$message_status
+$comment_status
+DONESCREEN
+
+}
+
 sub start_Task {
-    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
 
     my ($status,$accessmsg,$slot);
+    &Apache::structuretags::init_problem_globals('Task');
     if ($target ne 'webgrade') {
-	&Apache::structuretags::init_problem_globals('Task');
 	&Apache::structuretags::initialize_storage();
 	&Apache::lonhomework::showhash(%Apache::lonhomework::history);
 	if ($env{'request.state'} eq 'construct') {
@@ -394,46 +548,79 @@ sub start_Task {
     } 
 
     $Apache::lonhomework::parsing_a_task=1;
-    #should get back a <html> or the neccesary stuff to start XML/MathML
-    my ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
-	&Apache::structuretags::page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
-    
+
+    my $name;
+    if ($target eq 'web' || $target eq 'webgrade') {
+	$name = &Apache::structuretags::get_resource_name($parstack,$safeeval);
+    }
+
+    my ($result,$form_tag_start);
+    if ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex'
+	|| $target eq 'edit') {
+	($result,$form_tag_start) =
+	    &Apache::structuretags::page_start($target,$token,$tagstack,
+					       $parstack,$parser,$safeeval,
+					       $name,&style($target));
+	$result .= '<div class="LC_task">'."\n";
+    }
+
     if ($target eq 'web' && $env{'request.state'} ne 'construct') {
-	if ($Apache::lonhomework::modifygrades) {
-	    $body_tag_start.='<form name="gradesubmission" method="POST" action="';
+	if ($Apache::lonhomework::queuegrade
+	    || $Apache::lonhomework::modifygrades) {
+	    $result.='<form name="gradesubmission" method="post" action="';
 	    my $uri=$env{'request.uri'};
 	    if ($env{'request.enc'}) { $uri=&Apache::lonenc::encrypted($uri); }
-	    $body_tag_start.=$uri.'">'.&add_grading_button()."</form>";
+	    $result.=$uri.'">'.&add_grading_button()."</form>";
 	    my $symb=&Apache::lonnet::symbread();
 	    if (&Apache::lonnet::allowed('mgq',$env{'request.course.id'})) {
-		$body_tag_start.='<form method="POST" action="/adm/slotrequest">'.
+		$result.='<form method="post" name="slotrequest" action="/adm/slotrequest">'.
 		    '<input type="hidden" name="symb" value="'.$symb.'" />'.
 		    '<input type="hidden" name="command" value="showslots" />'.
 		    '<input type="submit" name="requestattempt" value="'.
 		    &mt('Show Slot list').'" />'.
 		    '</form>';
+		my $target_id = 
+		    &Apache::lonstathelpers::make_target_id({symb => $symb,
+							     part => '0'});
+		$result.='<form method="post" name="gradingstatus" action="/adm/statistics">'.
+		    '<input type="hidden" name="problemchoice" value="'.$target_id.'" />'.
+		    '<input type="hidden" name="reportSelected" value="grading_analysis" />'.
+		    '<input type="submit" name="grading" value="'.
+		    &mt('Show Grading Status').'" />'.
+		    '</form>';
 	    }
 	}
     }
     if ($target eq 'web' && $env{'request.state'} eq 'construct') {
 	$form_tag_start.=&Apache::structuretags::problem_web_to_edit_header($env{'form.rndseed'});
     }
-    if ($target eq 'web' || ($target eq 'grade' && !$env{'form.webgrade'}) || $target eq 'answer' ||
-	$target eq 'tex') {
+    if ($target eq 'web' 
+	|| ($target eq 'grade' && !$env{'form.webgrade'}) 
+	|| $target eq 'answer' 
+	|| $target eq 'tex') {
 	my ($version,$previous)=&get_version();
 	($status,$accessmsg,my $slot_name,$slot) = 
 	    &Apache::lonhomework::check_slot_access('0','Task');
+	if ($status eq 'CAN_ANSWER' && $version eq '') {
+	    # CAN_ANSWER mode, and no current version, unproctored access
+	    # thus self-checkedin
+	    &check_in('Task',undef,undef,$slot_name);
+	    &add_to_queue('gradingqueue',{'type' => 'Task',
+					  'time' => time,
+					  'slot' => $slot_name});
+	    ($version,$previous)=&get_version();
+	}
+
 	push(@Apache::inputtags::status,$status);
 	$Apache::inputtags::slot_name=$slot_name;
 	my $expression='$external::datestatus="'.$status.'";';
-	$expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$version.solved"}.'";';
+	$expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$version.0.solved"}.'";';
 	&Apache::run::run($expression,$safeeval);
 	&Apache::lonxml::debug("Got $status");
-	$body_tag_start.=&add_previous_version_button($status);
+	$result.=&add_previous_version_button($status);
 	if (!&show_task($status,$previous)) {
-	    my $bodytext=&Apache::lonxml::get_all_text("/task",$parser);
+	    my $bodytext=&Apache::lonxml::get_all_text("/task",$parser,$style);
 	    if ( $target eq "web" ) {
-		$result.= $head_tag_start.'</head>'.$body_tag_start;
 		if ($env{'request.state'} eq 'construct') {
 		    $result.=$form_tag_start;
 		}
@@ -449,17 +636,7 @@ sub start_Task {
 		} elsif ($status eq 'WAITING_FOR_GRADE') {
 		    $msg.='<h1>'.&mt('Your submission is in the grading queue.').'</h1>';
 		} elsif ($env{'form.donescreen'}) {
-		    my $title=&Apache::lonnet::gettitle();
-		    my @files=split(',',$Apache::lonhomework::history{'resource.'.$version.'.0.bridgetask.portfiles'});
-		    my $files='<ul><li>'.join('</li><li>',@files).'</li></ul>';
-		    $result.=<<DONESCREEN;
-<h2>$title</h2>
-<p> Files submitted: $files </p>
-<p> You are now done with this Bridge Task </p>
-<hr />
-<p> <a href="/adm/logout">Logout</a> </p>
-<p> <a href="/adm/roles">Change to a different course</a> </p>
-DONESCREEN
+		    $result .= &done_screen($version);
 		} elsif ($status ne 'NOT_YET_VIEWED') {
 		    $msg.='<h1>'.&mt('Not open to be viewed').'</h1>';
 		}
@@ -478,17 +655,18 @@ DONESCREEN
 		if ($status eq 'NEEDS_CHECKIN') {
 		    if(&proctor_check_auth($slot_name,$slot,'Task')
 		       && defined($Apache::inputtags::slot_name)) {
-			my $result=&add_to_queue('gradingqueue',
-						 [$Apache::inputtags::slot_name]);
+			my $result=
+			    &add_to_queue('gradingqueue',
+					  {'type' => 'Task',
+					   'time' => time,
+					   'slot' => 
+					       $Apache::inputtags::slot_name});
 			&Apache::lonxml::debug("add_to_queue said $result");
 		    }
 		}
 	    }
 	} elsif ($target eq 'web') {
-	    my $name= &Apache::structuretags::get_resource_name($parstack,$safeeval);
-	    $result.="$head_tag_start<title>$name</title></head>
-              $body_tag_start \n".&style();
-	    
+
 	    $result.=&preserve_grade_info();
 	    $result.=&internal_location();
 	    $result.=$form_tag_start.
@@ -499,7 +677,9 @@ DONESCREEN
 	      $target eq 'webgrade') {
 	my $webgrade='yes';
 	if ($target eq 'webgrade') {
-	    $result.=$head_tag_start.$body_tag_start;
+	    $result.= "\n".'<div class="LC_GRADING_task">'."\n".
+		'<script type="text/javascript" 
+                         src="/res/adm/includes/task_grading.js"></script>';
 	    #$result.='<br />Review'.&show_queue('reviewqueue');
 	    #$result.='<br />Grade'.&show_queue('gradingqueue');
 	}
@@ -508,7 +688,7 @@ DONESCREEN
         #       Hrrm, vaildation pass should perhaps say 'not_locked'
         #       perhaps do a search if there is a key that is mine and if
         #       there isn't reshow the queue....
-	my ($todo,$status_code)=&get_key_todo($target);
+	my ($todo,$status_code,$msg)=&get_key_todo($target);
 
 	if ($todo) {
 	    &setup_env_for_other_user($todo,$safeeval);
@@ -517,17 +697,13 @@ DONESCREEN
 		&Apache::lonnet::gettitle($symb).' for '.$uname.' at '.$udom.'</td></tr></table>';
 	    $form_tag_start.=
 		'<input type="hidden" name="gradingkey" value="'.
-		&Apache::lonnet::escape($todo).'" />';
+		&escape($todo).'" />';
 	    $Apache::bridgetask::queue_key=$todo;
 	    &Apache::structuretags::initialize_storage();
 	    &Apache::lonhomework::showhash(%Apache::lonhomework::history);
-	    if ($target eq 'webgrade') {
-		#$result.='<br />After -'.&show_queue($env{'form.queue'});
-		$result.="\n".'<table width="100%" style="width:100%" border="1">';
-		if ($status_code eq 'selected') {
-		    $form_tag_start.=
-			'<input type="hidden" name="queuemode" value="selected" />';
-		}
+	    if ($target eq 'webgrade' && $status_code eq 'selected') {
+		$form_tag_start.=
+		    '<input type="hidden" name="queuemode" value="selected" />';
 	    }
 	} else {
 	    if ($target eq 'webgrade') {
@@ -536,8 +712,19 @@ DONESCREEN
 		    &mt('Return to resource').'</a></p>';
 		if      ($status_code eq 'stop') {
 		    $result.='<b>'.&mt("Stopped grading.").'</b>'.$back;
+		} elsif ($status_code eq 'cancel') {
+		    $result.='<b>'.&mt("Cancelled grading.").'</b>'.$back;
+		} elsif ($status_code eq 'never_versioned') {
+		    $result.='<b>'.
+			&mt("Requested user has never accessed the task.").
+			'</b>'.$back;
+		} elsif ($status_code =~ /still_open:(.*)/) {
+		    my $date = &Apache::lonlocal::locallocaltime($1);
+		    $result.='<b>'.
+			&mt("Task is still open, will close at [_1].",$date).
+			'</b>'.$back;
 		} elsif ($status_code eq 'lock_failed') {
-		    $result.='<b>'.&mt("Failed to lock the request record.")
+		    $result.='<b>'.&mt("Failed to lock the requested record.")
 			.'</b>'.$back;
 		} elsif ($status_code eq 'unlock') {
 		    $result.='<b>'.&mt("Unlocked the requested record.")
@@ -547,12 +734,18 @@ DONESCREEN
 		    $result.=&show_queue($env{'form.queue'},1);
 		} elsif ($status_code eq 'select_user') {
 		    $result.=&select_user();
+		} elsif ($status_code eq 'unable') {
+		    $result.='<b>'.&mt("Unable to aqcuire a user to grade.").'</b>'.$back;
+		} elsif ($status_code eq 'not_allowed') {
+		    $result.='<b>'.&mt('Not allowed to grade the requested user.').' '.$msg.'</b>'.$back;
 		} else {
 		    $result.='<b>'.&mt("No user to be graded.").'</b>'.$back;
 		}
 	    }
 	    $webgrade='no';
-	    my $bodytext=&Apache::lonxml::get_all_text("/task",$parser);
+	}
+	if (!$todo || $env{'form.cancel'}) {
+	    my $bodytext=&Apache::lonxml::get_all_text("/task",$parser,$style);
 	}
 	if ($target eq 'webgrade' && defined($env{'form.queue'})) {
 	    if ($webgrade eq 'yes') {
@@ -577,8 +770,11 @@ DONESCREEN
 	    }
 	    if ($webgrade eq 'yes') { $result.=&webgrade_standard_info(); }
 	}
+	if ($target eq 'webgrade') {
+	    $result.="\n".'<div id="LC_GRADING_criterialist">';
+	}
     } elsif ($target eq 'edit') {
-	$result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.
+	$result.=$form_tag_start.
 	    &Apache::structuretags::problem_edit_header();
 	$Apache::lonxml::warnings_error_header=
 	    &mt("Editor Errors - these errors might not effect the running of the problem, but they will likely cause problems with further use of the Edit mode. Please use the EditXML mode to fix these errors.")."<br />";
@@ -591,6 +787,20 @@ DONESCREEN
     return $result;
 }
 
+sub get_task_end_time {
+    my ($queue_entry,$symb,$udom,$uname) = @_;
+
+    my $end_time;
+    if (my $slot = &slotted_access($queue_entry)) {
+	my %slot_data=&Apache::lonnet::get_slot($slot);
+	$end_time = $slot_data{'endtime'};
+    } else {
+	$end_time = &Apache::lonhomework::due_date('0',$symb,
+						   $udom,$uname);
+    }
+    return $end_time;
+}
+
 sub get_key_todo {
     my ($target)=@_;
     my $todo;
@@ -613,19 +823,88 @@ sub get_key_todo {
 	return (undef,'select_user');
     }
 
+
+    my $me=$env{'user.name'}.':'.$env{'user.domain'};
+
+    #need to try both queues..
+    if (defined($env{'form.regradeaspecificsubmission'}) &&
+	defined($env{'form.gradinguser'})               &&
+	defined($env{'form.gradingdomain'})               ) {
+	my ($symb,$cid)=&Apache::lonxml::whichuser();
+	my $cnum  = $env{'course.'.$cid.'.num'};
+	my $cdom  = $env{'course.'.$cid.'.domain'};
+	my $uname = $env{'form.gradinguser'};
+	my $udom  = $env{'form.gradingdomain'};
+
+	my $gradingkey=&encode_queue_key($symb,$udom,$uname);
+
+	my $queue;
+
+	if      (&in_queue('gradingqueue',$symb,$cdom,$cnum,$udom,$uname)) {
+	    $env{'form.queue'} = $queue = 'gradingqueue';
+	} elsif (&in_queue('reviewqueue' ,$symb,$cdom,$cnum,$udom,$uname)) {
+	    $env{'form.queue'} = $queue = 'reviewqueue';
+	}
+	
+	if (!$queue) {
+	    $env{'form.queue'} = $queue = 'none';
+	    #not queued so doing either a re or pre grade
+	    my %status = &Apache::lonnet::restore($symb,$cid,$udom,$uname);
+	    if ($status{'resource.0.version'} < 1) {
+		return (undef,'never_versioned');
+	    }
+	    return ($gradingkey);
+	}
+
+	if ($queue) {
+	    my $queue_entry = &get_queue_data($queue,$udom,$uname);
+	
+	    my $end_time = &get_task_end_time($queue_entry,$symb,
+					      $udom,$uname);
+	    if ($end_time > time) {
+		return (undef,"still_open:$end_time");
+	    }
+	}
+
+	my $who=&queue_key_locked($queue,$gradingkey);
+	if ($who eq $me) {
+	    #already have the lock
+	    $env{'form.gradingkey'}=&escape($gradingkey);
+	    &Apache::lonxml::debug("already locked");
+	    return ($gradingkey);
+	}
+	
+	if (!defined($who)) {
+	    if (&lock_key($queue,$gradingkey)) {
+		&Apache::lonxml::debug("newly locked");
+		return ($gradingkey);
+	    } else {
+		return (undef,'lock_failed');
+	    }
+	}
+
+	#otherwise (defined($who) && $who ne $me) some else has it...
+	return (undef,'not_allowed',
+		&mt('Another user ([_1]) currently has the record for [_2] locked.',
+		    $who,$env{'form.gradinguser'}.':'.$env{'form.gradingdomain'}));
+    }
+
+
     my $queue=$env{'form.queue'};
 
     if (!defined($queue)) {
 	$env{'form.queue'}=$queue='gradingqueue';
     }
 
-    my $gradingkey=&Apache::lonnet::unescape($env{'form.gradingkey'});
+    my $gradingkey=&unescape($env{'form.gradingkey'});
 
     if ($env{'form.queue'} eq 'none') {
 	if (defined($env{'form.gradingkey'})) {
 	    if ($target eq 'webgrade') {
 		if ($env{'form.stop'}) {
 		    return (undef,'stop');
+		} elsif ($env{'form.cancel'}) {
+		    return (undef,'cancel');
 		} elsif ($env{'form.next'}) {
 		    return (undef,'select_user');
 		}
@@ -640,7 +919,6 @@ sub get_key_todo {
 	&& $env{'form.queuemode'} eq 'selected') {
 	
 	my $who=&queue_key_locked($queue,$gradingkey);
-	my $me=$env{'user.name'}.'@'.$env{'user.domain'};
 	if ($who eq $me) {
 	    &Apache::lonxml::debug("Found a key was given to me");
 	    return ($gradingkey,'selected');
@@ -672,7 +950,8 @@ sub get_key_todo {
 
     if ($env{'form.queuemode'} ne 'selected') {
 	# don't get something new from the queue if they hit the stop button
-    	if (!($env{'form.stop'} && $target eq 'webgrade') 
+    	if (!(($env{'form.cancel'} || $env{'form.stop'}) 
+	      && $target eq 'webgrade') 
 	    && !$env{'form.gradingaction'}) {
 	    &Apache::lonxml::debug("Getting anew $queue");
 	    return (&get_from_queue($queue));
@@ -682,6 +961,17 @@ sub get_key_todo {
     }
     return (undef,undef)
 }
+
+sub minimize_storage {
+    foreach my $key (keys(%Apache::lonhomework::results)) {
+	if ($key =~ /regrader$/) { next; }
+	if ($Apache::lonhomework::results{$key} eq
+	    $Apache::lonhomework::history{$key}) {
+	    delete($Apache::lonhomework::results{$key});
+	}
+    }
+}
+
 sub end_Task {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     my $result='';
@@ -709,25 +999,34 @@ sub end_Task {
 		    &show_task($status,$previous)) {
 		    $result.=&Apache::inputtags::gradestatus('0');
 		    $result.='</form>';
+		    my $action = &Apache::lonenc::check_encrypt($env{'request.uri'});
 		    $result.=<<DONEBUTTON;
-<form method="POST">
+<form name="done" method="post" action="$action">
    <input type="hidden" name="donescreen" value="1" />
    <input type="submit" value="Done" />
 </form>
 DONEBUTTON
                 }
 		if (&show_task($status,$previous) &&
-		    $Apache::lonhomework::history{"resource.$version.status"} =~ /^(pass|fail)$/) {
-		    my $bt_status=$Apache::lonhomework::history{"resource.$version.status"};
+		    $Apache::lonhomework::history{"resource.$version.0.status"} =~ /^(pass|fail)$/) {
+		    my $bt_status=$Apache::lonhomework::history{"resource.$version.0.status"};
 		    my $title=&Apache::lonnet::gettitle();
 
+		    my $start_time;
+
 		    my $slot_name=
-			$Apache::lonhomework::history{"resource.$version.checkedin.slot"};
-		    my %slot=&Apache::lonnet::get_slot($slot_name);
-		    my $start_time=
-			&Apache::lonlocal::locallocaltime($slot{'starttime'});
+			$Apache::lonhomework::history{"resource.$version.0.checkedin.slot"};
+		    if ($slot_name) {
+			my %slot=&Apache::lonnet::get_slot($slot_name);
+
+			$start_time=$slot{'starttime'}
+		    } else {
+			$start_time= 
+			    &Apache::lonnet::EXT('resource.0.opendate');
+		    }
+		    $start_time=&Apache::lonlocal::locallocaltime($start_time);
 
-		    my $status = "\n<div class='$bt_status'>\n";
+		    my $status = "\n<div class='LC_$bt_status LC_criteria'>\n";
 		    
 		    if ($bt_status eq 'pass')  {
 			$status.='<h2>You passed the '.$title.' given on '.
@@ -743,30 +1042,41 @@ DONEBUTTON
 		    my $man_count=0;
 		    my $opt_count=0;
 		    my $opt_passed=0;
-		    foreach my $dim_id (@Apache::bridgetask::dimensionlist) {
-			if ($Apache::bridgetask::dimensionmandatory{$dim_id}
+		    foreach my $dim (keys(%Apache::bridgetask::top_dimensionlist)) {
+			if ($Apache::bridgetask::top_dimensionlist{$dim}{'manadatory'}
 			    eq 'N') {
 			    $opt_count++;
-			    if ($Apache::lonhomework::history{"resource.$version.$dim_id.status"} eq 'pass') {
+			    if ($Apache::lonhomework::history{"resource.$version.0.$dim.status"} eq 'pass') {
 				$opt_passed++;
 			    }
 			} else {
 			    $man_count++;
 			}
 		    }
+		    
 		    my $opt_req=&Apache::lonxml::get_param('OptionalRequired',
 							 $parstack,$safeeval);
 		    if ($opt_req !~ /\S/) { $opt_req='0'; }
-		    $status.="\n<p>".&mt('You needed to pass all of the [_1]  mandatory components and [_2] of the [_3] optional components on the bridge task.',$man_count,$opt_req,$opt_count)."</p></div>\n";
+		    $status.="\n<p>".&mt('You needed to pass all of the [_1]  mandatory components and [_2] of the [_3] optional components, of which you passed [_4].',$man_count,$opt_req,$opt_count,$opt_passed)."</p></div>\n";
 
 		    my $internal_location=&internal_location();
 		    $result=~s/\Q$internal_location\E/$status/;
 		}
-	    } 
-	    if ($target eq 'web' || $target eq 'webgrade') {
-		$result.=&Apache::lonxml::xmlend().'</html>';
+		$result.="\n</div>\n".
+		    &Apache::loncommon::end_page({'discussion' => 1});
 	    }
 	}
+
+	my $useslots = &Apache::lonnet::EXT("resource.0.useslots");
+	my %queue_data = ('type' => 'Task',
+			  'time' => time,);
+	if (defined($Apache::inputtags::slot_name)) {
+	    $queue_data{'slot'} = $Apache::inputtags::slot_name;
+	} elsif (defined($Apache::lonhomework::history{"resource.$version.0.checkedin.slot"})) {
+	    $queue_data{'slot'} = $Apache::lonhomework::history{"resource.$version.0.checkedin.slot"};
+	}
+	
+
 	if ($target eq 'grade' && !$env{'form.webgrade'} && !$previous) {
 	    my $award='SUBMITTED';
 	    &Apache::essayresponse::file_submission("$version.0",'bridgetask',
@@ -788,14 +1098,18 @@ DONEBUTTON
 	    }
 	    &Apache::lonhomework::showhash(%Apache::lonhomework::results);
 	    &Apache::structuretags::finalize_storage();
-	    if ($award eq 'SUBMITTED'
-		&& defined($Apache::inputtags::slot_name)) {
-		&add_to_queue('gradingqueue',[$Apache::inputtags::slot_name]);
+	    if ($award eq 'SUBMITTED') {
+		&add_to_queue('gradingqueue',\%queue_data);
 	    }
 	} elsif ($Apache::lonhomework::results{'INTERNAL_store'}) {
 	    &Apache::structuretags::finalize_storage();
 	}
-	if ($target eq 'grade' && $env{'form.webgrade'} eq 'yes') {
+	if ($target eq 'grade' && $env{'form.webgrade'} eq 'yes' 
+	    && exists($env{'form.cancel'})) {
+	    &check_queue_unlock($env{'form.queue'});
+	    &Apache::lonxml::debug(" cancelled grading .".$env{'form.queue'});
+	} elsif ($target eq 'grade' && $env{'form.webgrade'} eq 'yes' 
+		 && !exists($env{'form.cancel'})) {
 	    my $optional_required=
 		&Apache::lonxml::get_param('OptionalRequired',$parstack,
 					   $safeeval);
@@ -804,11 +1118,11 @@ DONEBUTTON
 	    my $ungraded=0;
 	    my $review=0;   
 	    &Apache::lonhomework::showhash(%Apache::lonhomework::results);
-	    foreach my $dim_id (@Apache::bridgetask::dimensionlist) {
+	    foreach my $dim (keys(%Apache::bridgetask::top_dimensionlist)) {
 		my $status=
-		    $Apache::lonhomework::results{"resource.$version.$dim_id.status"};
+		    $Apache::lonhomework::results{"resource.$version.0.$dim.status"};
 		my $mandatory=
-		    ($Apache::bridgetask::dimensionmandatory{$dim_id} ne 'N');
+		    ($Apache::bridgetask::top_dimensionlist{$dim}{'manadatory'} ne 'N');
 		if ($status eq 'pass') {
 		    if (!$mandatory) { $optional_passed++; }
 		} elsif ($status eq 'fail') {
@@ -824,28 +1138,34 @@ DONEBUTTON
 	    if ($optional_passed < $optional_required) {
 		$mandatory_failed++;
 	    }
-	    &Apache::lonxml::debug("all dim ".join(':',@Apache::bridgetask::dimensionlist)."results -> m_f $mandatory_failed o_p $optional_passed u $ungraded r $review");
-	    $Apache::lonhomework::results{'resource.grader'}=
-		$env{'user.name'}.'@'.$env{'user.domain'};
+	    &Apache::lonxml::debug("all dim ".join(':',keys(%Apache::bridgetask::top_dimensionlist))."results -> m_f $mandatory_failed o_p $optional_passed u $ungraded r $review");
+	    $Apache::lonhomework::results{'resource.0.regrader'}=
+		$env{'user.name'}.':'.$env{'user.domain'};
 	    if ($review) {
-		$Apache::lonhomework::results{"resource.$version.status"}='review';
+		$Apache::lonhomework::results{"resource.$version.0.status"}='review';
 		if ($env{'form.queue'} eq 'reviewqueue') {
 		    &check_queue_unlock($env{'form.queue'});
 		    &Apache::lonxml::debug(" still needs review not changing status.");
 		} else {
-		    &move_between_queues($env{'form.queue'},'reviewqueue');
+		    if ($env{'form.queue'} ne 'none') {
+			&move_between_queues($env{'form.queue'},'reviewqueue');
+		    } else {
+			&add_to_queue('reviewqueue',\%queue_data);
+		    }
 		}
 	    } elsif ($ungraded) {
-		$Apache::lonhomework::results{"resource.$version.status"}='ungraded';
-		if ($env{'form.queue'} eq 'reviewqueue' ||
-		    $env{'form.queue'} eq 'none' ) {
+		$Apache::lonhomework::results{"resource.$version.0.status"}='ungraded';
+		if ($env{'form.queue'} eq 'reviewqueue') {
 		    &Apache::lonxml::debug("moving back.");
-		    &move_between_queues($env{'form.queue'},'gradingqueue');
+		    &move_between_queues($env{'form.queue'},
+					 'gradingqueue');
+		} elsif ($env{'form.queue'} eq 'none' ) {
+		    &add_to_queue('gradingqueue',\%queue_data);	
 		} else {
 		    &check_queue_unlock($env{'form.queue'});
 		}
 	    } elsif ($mandatory_failed) {
-		$Apache::lonhomework::results{"resource.$version.status"}='fail';
+		$Apache::lonhomework::results{"resource.$version.0.status"}='fail';
 		$Apache::lonhomework::results{"resource.$version.0.solved"}='incorrect_by_override';
 		$Apache::lonhomework::results{"resource.$version.0.award"}='INCORRECT';
 		$Apache::lonhomework::results{"resource.$version.0.awarded"}='0';
@@ -863,7 +1183,7 @@ DONEBUTTON
 						       ["$version.0.bridgetask"]);
 		}
 	    } else {
-		$Apache::lonhomework::results{"resource.$version.status"}='pass';
+		$Apache::lonhomework::results{"resource.$version.0.status"}='pass';
 		$Apache::lonhomework::results{"resource.$version.0.solved"}='correct_by_override';
 		$Apache::lonhomework::results{"resource.$version.0.award"}='EXACT_ANS';
 		$Apache::lonhomework::results{"resource.$version.0.awarded"}='1';
@@ -880,8 +1200,8 @@ DONEBUTTON
 						       ["$version.0.bridgetask"]);
 		}
 	    }
-	    $Apache::lonhomework::results{"resource.status"}=
-		$Apache::lonhomework::results{"resource.$version.status"};
+	    $Apache::lonhomework::results{"resource.0.status"}=
+		$Apache::lonhomework::results{"resource.$version.0.status"};
 	    if (defined($Apache::lonhomework::results{"resource.$version.0.awarded"})) {
 		$Apache::lonhomework::results{"resource.0.award"}=
 		    $Apache::lonhomework::results{"resource.$version.0.award"};
@@ -890,10 +1210,11 @@ DONEBUTTON
 		$Apache::lonhomework::results{"resource.0.solved"}=
 		    $Apache::lonhomework::results{"resource.$version.0.solved"};
 	    }
+	    &minimize_storage();
 	    &Apache::structuretags::finalize_storage();
 	}
     } elsif ($target eq 'webgrade') {
-	$result.="</table>\n<hr />";
+	$result.="</div>";
 	#$result.='<input type="submit" name="next" value="'.
 	#    &mt('Save &amp; Next').'" /> ';
 	#$result.='<input type="submit" name="end" value="'.
@@ -902,7 +1223,8 @@ DONEBUTTON
 	#    &mt('Throw Away &amp; Stop Grading').'" /> ';
 	#$result.='<input type="submit" name="save" value="'.
 	#    &mt('Save Partial Grade and Continue Grading').'" /> ';
-	$result.='</form>'.&Apache::loncommon::endbodytag().'</html>';
+	$result.='</form>'."\n</div>\n</div>\n".
+	    &Apache::loncommon::end_page();
     } elsif ($target eq 'meta') {
 	$result.=&Apache::response::meta_package_write('Task');
         $result.=&Apache::response::meta_stores_write('solved','string',
@@ -913,7 +1235,12 @@ DONEBUTTON
 						      'Partial Credit Factor');
 	$result.=&Apache::response::meta_stores_write('status','string',
 						      'Bridge Task Status');
+    } elsif ($target eq 'edit') {
+	&Apache::structuretags::reset_problem_globals('Task');
+	undef($Apache::lonhomework::parsing_a_task);
+	return ('','no');
     }
+    &Apache::structuretags::reset_problem_globals('Task');
     undef($Apache::lonhomework::parsing_a_task);
     return $result;
 }
@@ -927,7 +1254,7 @@ sub move_between_queues {
     } else {
 	$cur_data = ['none'];
     }
-    my $result=&add_to_queue($dest_queue,[$cur_data->[0]]);
+    my $result=&add_to_queue($dest_queue,$cur_data);
     if ($result ne 'ok') {
 	return $result;
     }
@@ -940,13 +1267,14 @@ sub check_queue_unlock {
     if ($queue eq 'none') { return 'ok'; }
     my ($symb,$cid,$udom,$uname)=&Apache::lonxml::whichuser();
     if (!defined($key)) {
-	$key="$symb\0queue\0$uname\@$udom";
+	$key="$symb\0queue\0$uname:$udom";
     }
     my $cnum=$env{'course.'.$cid.'.num'};
     my $cdom=$env{'course.'.$cid.'.domain'};
-    my $me=$env{'user.name'}.'@'.$env{'user.domain'};
+    my $me=$env{'user.name'}.':'.$env{'user.domain'};
     my $who=&queue_key_locked($queue,$key,$cdom,$cnum);
     if  ($who eq $me) {
+	&Apache::lonxml::debug("unlocking my own $who");
 	return &Apache::lonnet::del($queue,["$key\0locked"],$cdom,$cnum);
     } elsif ($allow_not_me) {
 	&Apache::lonxml::debug("unlocking $who by $me");
@@ -955,6 +1283,25 @@ sub check_queue_unlock {
     return 'not_owner';
 }
 
+sub in_queue {
+    my ($queue,$symb,$cdom,$cnum,$udom,$uname)=@_;
+    if ($queue eq 'none') { return 0; }
+    if (!defined($symb) || !defined($cdom) || !defined($cnum)
+	|| !defined($udom) || !defined($uname)) {
+	($symb,my $cid,$udom,$uname)=&Apache::lonxml::whichuser();
+	$cnum=$env{'course.'.$cid.'.num'};
+	$cdom=$env{'course.'.$cid.'.domain'};
+    }
+
+    my $key=&encode_queue_key($symb,$udom,$uname);
+    my %results = &Apache::lonnet::get($queue,[$key],$cdom,$cnum);
+
+    if (defined($results{$key})) {
+	return 1;
+    }
+    return 0;
+}
+
 sub remove_from_queue {
     my ($queue,$symb,$cdom,$cnum,$udom,$uname)=@_;
     if ($queue eq 'none') { return 'ok'; }
@@ -964,9 +1311,11 @@ sub remove_from_queue {
 	$cnum=$env{'course.'.$cid.'.num'};
 	$cdom=$env{'course.'.$cid.'.domain'};
     }
+    if (!&in_queue($queue,$symb,$cdom,$cnum,$udom,$uname)) {
+	return 'ok';
+    }
     my $key=&encode_queue_key($symb,$udom,$uname);
     my @keys=($key,"$key\0locked");
-    &Apache::lonnet::logthis("removing @keys");
     return &Apache::lonnet::del($queue,\@keys,$cdom,$cnum);
 }
 
@@ -982,11 +1331,15 @@ sub setup_env_for_other_user {
 }
 
 sub get_queue_data {
-    my ($queue)=@_;
-    my ($symb,$cid,$udom,$uname)=&Apache::lonxml::whichuser();
+    my ($queue,$udom,$uname)=@_;
+    my ($symb,$cid,$other_udom,$other_uname)=&Apache::lonxml::whichuser();
+    if (!$uname || !$udom) {
+	$uname=$other_uname;
+	$udom =$other_udom;
+    }
     my $cnum=$env{'course.'.$cid.'.num'};
     my $cdom=$env{'course.'.$cid.'.domain'};
-    my $todo="$symb\0queue\0$uname\@$udom";
+    my $todo="$symb\0queue\0$uname:$udom";
     my ($key,$value)=&Apache::lonnet::get($queue,[$todo],$cdom,$cnum);
     if ($key eq $todo && ref($value)) {
 	return $value;
@@ -1005,17 +1358,17 @@ sub check_queue_for_key {
 	if (defined($results{"$todo\0locked"})) {
 	    return 'locked';
 	}
-	my $slot;
-	if (ref($results{$todo}) eq 'ARRAY')  {
-	    $slot = $results{$todo}[0];
-	} elsif (ref($results{$todo}) eq 'HASH')  {
-	    $slot = $results{$todo}{'slot'};
-	}
-	if (defined($slot)) {
+	if (my $slot=&slotted_access($results{$todo})) {
 	    my %slot_data=&Apache::lonnet::get_slot($slot);
 	    if ($slot_data{'endtime'} > time) { 
 		return 'in_progress';
 	    }
+	} else {
+	    my ($symb) = &decode_queue_key($todo);
+	    my $due_date = &Apache::lonhomework::due_date('0',$symb);
+	    if ($due_date > time) {
+		return 'in_progress';
+	    }
 	}
 	return 'enqueued';
     }
@@ -1032,10 +1385,34 @@ sub add_to_queue {
     my $cnum=$env{'course.'.$cid.'.num'};
     my $cdom=$env{'course.'.$cid.'.domain'};
     my %data;
-    $data{"$symb\0queue\0$uname\@$udom"}=$user_data;
+    $data{"$symb\0queue\0$uname:$udom"}=$user_data;
     return &Apache::lonnet::cput($queue,\%data,$cdom,$cnum);
 }
 
+sub get_limited_classlist {
+    my ($sections) = @_;
+
+    my $classlist = &Apache::loncoursedata::get_classlist();
+    foreach my $student (keys(%$classlist)) {
+	if ( $classlist->{$student}[&Apache::loncoursedata::CL_STATUS()]
+	     ne 'Active') {
+	    delete($classlist->{$student});
+       	}
+    }
+
+    if (ref($sections) && !grep('all',@{ $sections })) {
+	foreach my $student (keys(%$classlist)) {
+	    my $section  = 
+		$classlist->{$student}[&Apache::loncoursedata::CL_SECTION()];
+	    if (! grep($section,@{ $sections })) {
+		delete($classlist->{$student});
+	    }
+	}
+    }
+    return $classlist;
+}
+
+
 sub show_queue {
     my ($queue,$with_selects)=@_;
     my $result;
@@ -1045,46 +1422,81 @@ sub show_queue {
 
     my @chosen_sections=
 	&Apache::loncommon::get_env_multiple('form.chosensections');
-    &Apache::grades::init_perm();
-    my ($classlist,$section,$fullname)=&Apache::grades::getclasslist(\@chosen_sections,);
-    &Apache::grades::reset_perm();
+
+    my $classlist = &get_limited_classlist(\@chosen_sections);
+
     if (!(grep(/^all$/,@chosen_sections))) {
 	$result.='<p> Showing only sections <tt>'.join(', ',@chosen_sections).
 	    '</tt>.</p> '."\n";
     }
 
+    my ($view,$view_section);
+    my $scope = $env{'request.course.id'};
+    if (!($view=&Apache::lonnet::allowed('vgr',$scope))) {
+	$scope .= '/'.$env{'request.course.sec'};
+	if ( $view = &Apache::lonnet::allowed('vgr',$scope)) {
+	    $view_section=$env{'request.course.sec'};
+	} else {
+	    undef($view);
+	}
+    }
+
     my $regexp="^$symb\0";
     my %queue=&Apache::lonnet::dump($queue,$cdom,$cnum,$regexp);
     my ($tmp)=%queue;
     if ($tmp=~/^error: 2 /) {
-	return "\n<h3>Current Queue - $queue</h3><table border='1'><tr><td>Empty</td></tr></table>";
-    }
-    $result.="\n<h3>Current Queue - $symb $queue </h3><table border='1'><tr>";
-    if ($with_selects) { $result.="<th></th>"; }
-    $result.="<th>resource</th><th>user</th><th>type</th><th>data</th></tr>";
+	return "\n<h3>Current Queue - $queue</h3>".
+	    &Apache::loncommon::start_data_table().
+	    &Apache::loncommon::start_data_table_row().
+	    '<td>'.&mt('Empty').'</td>'.
+	    &Apache::loncommon::end_data_table_row().
+	    &Apache::loncommon::end_data_table();
+    }
+    my $title=&Apache::lonnet::gettitle($symb);
+    $result.="\n<h3>Current Queue - $title $queue </h3>".
+	&Apache::loncommon::start_data_table().
+	&Apache::loncommon::start_data_table_header_row();
+    if ($with_selects) { $result.="<th>Status</th><th></th>"; }
+    $result.="<th>user</th><th>data</th>".
+	&Apache::loncommon::end_data_table_header_row();
     foreach my $key (sort(keys(%queue))) {
 	my ($symb,$uname,$udom) = &decode_queue_key($key);
 	if (!defined($classlist->{$uname.':'.$udom})) { next; }
+	
+	my $section = $classlist->{$uname.':'.$udom}[&Apache::loncoursedata::CL_SECTION()];
+
+	my $can_view=1;
+	if (!$view
+	    || ($view_section && !$section)
+	    || ($view_section && $section && ($view_section ne $section))) {
+	    $can_view=0;
+	}
+
 	if ($key=~/locked$/ && !$with_selects) {
-	    my $title=&Apache::lonnet::gettitle($symb);
-	    $result.="<tr><td>$title</td><td>$uname</td>";
-	    $result.='<td>lock</td><td>'.$queue{$key}.'</td></tr>';
+	    $result.= &Apache::loncommon::start_data_table_row().
+		"<td>$uname</td>";
+	    $result.='<td>'.$queue{$key}.'</td></tr>';
 	} elsif ($key=~/timestamp$/ && !$with_selects) {
-	    my ($symb,undef) = split("\0",$key);
-	    my $title=&Apache::lonnet::gettitle($symb);
-	    $result.="<tr><td>$title</td><td></td>";
-	    $result.='<td>last queue modification time</td><td>'.
+	    $result.=&Apache::loncommon::start_data_table_row()."<td></td>";
+	    $result.='<td>'.
 		&Apache::lonlocal::locallocaltime($queue{$key})."</td></tr>";
 	} elsif ($key!~/(timestamp|locked)$/) {
-	    my $title=&Apache::lonnet::gettitle($symb);
-	    $result.="<tr>";
-	    my $slot=$queue{$key}->[0];
-	    my %slot_data=&Apache::lonnet::get_slot($slot);
+	    $result.= &Apache::loncommon::start_data_table_row();
+	    my ($end_time,$slot_text);
+	    if (my $slot=&slotted_access($queue{$key})) {
+		my %slot_data=&Apache::lonnet::get_slot($slot);
+		$end_time = $slot_data{'endtime'};
+		$slot_text = &mt('Slot: [_1]',$slot);
+	    } else {
+		$end_time = &Apache::lonhomework::due_date('0',$symb);
+		$slot_text = '';
+	    }
 	    if ($with_selects) {
-		my $ekey=&Apache::lonnet::escape($key);
-		my ($action,$description)=('select',&mt('Select'));
+		my $ekey=&escape($key);
+		my ($action,$description,$status)=('select',&mt('Select'));
 		if (exists($queue{"$key\0locked"})) {
-		    my $me=$env{'user.name'}.'@'.$env{'user.domain'};
+		    my $me=$env{'user.name'}.':'.$env{'user.domain'};
+		    $status=&mt('Locked by <tt>[_1]</tt>',$queue{"$key\0locked"});
 		    if ($me eq $queue{"$key\0locked"}) {
 			($action,$description)=('resume',&mt('Resume'));
 		    } else {
@@ -1096,10 +1508,11 @@ sub show_queue {
 		    $seclist.='<input type="hidden" name="chosensections" 
                                value="'.$sec.'" />';
 		}
-		if (time > $slot_data{'endtime'}) {
+		if ($can_view && ($end_time ne '' && time > $end_time)) {
 		    $result.=(<<FORM);
+<td>$status</td>
 <td>
-<form method="POST">
+<form style="display: inline" method="post">
  <input type="hidden" name="gradingkey" value="$ekey" />
  <input type="hidden" name="queue" value="$queue" />
  <input type="hidden" name="gradingaction" value="$action" />
@@ -1110,18 +1523,20 @@ sub show_queue {
 </form>
 </td>
 FORM
-
+                } elsif (!$can_view && ($end_time ne '' && time > $end_time)) {
+		    $result.='<td>'.&mt("Not gradable").'</td><td>&nbsp;</td>'
                 } else {
-		    $result.='<td>'.&mt("In Progress").'</td>'
+		    $result.='<td>'.&mt("In Progress").'</td><td>&nbsp;</td>'
 		}
 	    }
-	    $result.="<td>$title</td><td>$uname</td>";
-	    $result.='<td>queue entry</td><td>Slot: '.$slot.' End time: '.
-		&Apache::lonlocal::locallocaltime($slot_data{'endtime'}).
-		"</td></tr>";
+	    $result.= "<td>".$classlist->{$uname.':'.$udom}[&Apache::loncoursedata::CL_FULLNAME()].
+		" <tt>($uname:$udom)</tt> </td>";
+	    $result.='<td>'.$slot_text.' End time: '.
+		&Apache::lonlocal::locallocaltime($end_time).
+		"</td>".&Apache::loncommon::end_data_table_row();
 	}
     }
-    $result.="</table><hr />\n";
+    $result.= &Apache::loncommon::end_data_table()."<hr />\n";
     return $result;
 }
 
@@ -1131,6 +1546,9 @@ sub get_queue_counts {
     my ($symb,$cid,$udom,$uname)=&Apache::lonxml::whichuser();
     my $cnum=$env{'course.'.$cid.'.num'};
     my $cdom=$env{'course.'.$cid.'.domain'};
+
+    my $classlist=&get_limited_classlist();
+
     my $regexp="^$symb\0";
     my %queue=&Apache::lonnet::dump($queue,$cdom,$cnum,$regexp);
     my ($tmp)=%queue;
@@ -1138,18 +1556,30 @@ sub get_queue_counts {
 	return (0,0,0);
     }
     my ($entries,$ready_to_grade,$locks)=(0,0,0);
+    my %slot_cache;
     foreach my $key (sort(keys(%queue))) {
+	my ($symb,$uname,$udom) = &decode_queue_key($key);
+	if (!defined($classlist->{$uname.':'.$udom})) { next; }
+
 	if ($key=~/locked$/) {
 	    $locks++;
 	} elsif ($key=~/timestamp$/) {
 	    #ignore
 	} elsif ($key!~/(timestamp|locked)$/) {
-	    my ($symb,$uname,$udom) = &decode_queue_key($key);
 	    $entries++;
-	    my $slot=$queue{$key}->[0];
-	    my %slot_data=&Apache::lonnet::get_slot($slot);
-	    if (time > $slot_data{'endtime'}) {
-		$ready_to_grade++;
+	    if (my $slot=&slotted_access($queue{$key})) {
+		if (!exists($slot_cache{$slot})) {
+		    my %slot_data=&Apache::lonnet::get_slot($slot);
+		    $slot_cache{$slot} = \%slot_data;
+		}
+		if (time > $slot_cache{$slot}{'endtime'}) {
+		    $ready_to_grade++;
+		}
+	    } else {
+		my $due_date = &Apache::lonhomework::due_date('0',$symb);
+		if ($due_date ne '' && time > $due_date) {
+		    $ready_to_grade++;
+		}
 	    }
 	}
     }
@@ -1158,13 +1588,13 @@ sub get_queue_counts {
 
 sub encode_queue_key {
     my ($symb,$udom,$uname)=@_;
-    return "$symb\0queue\0$uname\@$udom";
+    return "$symb\0queue\0$uname:$udom";
 }
 
 sub decode_queue_key {
     my ($key)=@_;
     my ($symb,undef,$user) = split("\0",$key);
-    my ($uname,$udom) = split('@',$user);
+    my ($uname,$udom) = split(':',$user);
     return ($symb,$uname,$udom);
 }
 
@@ -1183,38 +1613,86 @@ sub queue_key_locked {
     return undef;
 }
 
+sub slotted_access {
+    my ($queue_entry) = @_;
+    if (ref($queue_entry) eq 'ARRAY') {
+	if (defined($queue_entry->[0])) {
+	    return $queue_entry->[0];
+	}
+	return undef;
+    } elsif (ref($queue_entry) eq 'HASH') {
+	if (defined($queue_entry->{'slot'})) {
+	    return $queue_entry->{'slot'};
+	}
+	return undef;
+    }
+    return undef;
+}
+
 sub pick_from_queue_data {
-    my ($queue,$check_section,$queuedata,$cdom,$cnum)=@_;
+    my ($queue,$check_section,$queuedata,$cdom,$cnum,$classlist)=@_;
+    my @possible; # will hold queue entries that are valid to be selected
     foreach my $key (keys(%$queuedata)) {
 	if ($key =~ /\0locked$/) { next; }
 	if ($key =~ /\0timestamp$/) { next; }
+
 	my ($symb,$uname,$udom)=&decode_queue_key($key);
+	if (!defined($classlist->{$uname.':'.$udom})) { next; }
+
 	if ($check_section) {
-	    my $section=&Apache::lonnet::getsection($uname,$udom);
+	    my $section =
+		$classlist->{$uname.':'.$udom}[&Apache::loncoursedata::CL_SECTION()];
 	    if ($section eq $check_section) {
 		&Apache::lonxml::debug("my sec");
 		next;
 	    }
 	}
-	my $slot=$queuedata->{$key}[0];
-	my %slot_data=&Apache::lonnet::get_slot($slot);
-	if ($slot_data{'endtime'} > time) { 
-	    &Apache::lonxml::debug("not time");
-	    next;
+	my $end_time;
+	if (my $slot=&slotted_access($queuedata->{$key})) {
+	    &Apache::lonxml::debug("looking at slot $slot");
+	    my %slot_data=&Apache::lonnet::get_slot($slot);
+	    if ($slot_data{'endtime'} < time) { 
+		$end_time = $slot_data{'endtime'};
+	    } else {
+		&Apache::lonxml::debug("not time ".$slot_data{'endtime'});
+		next;
+	    }
+	} else {
+	    my $due_date = &Apache::lonhomework::due_date('0',$symb);
+	    if ($due_date < time) {
+		$end_time = $due_date;
+	    } else {
+		&Apache::lonxml::debug("not time $due_date");
+		next;
+	    }
 	}
-	if (&queue_key_locked($queue,$key,$cdom,$cnum)) {
+	
+	if (exists($queuedata->{"$key\0locked"})) {
 	    &Apache::lonxml::debug("someone already has um.");
 	    next;
 	}
-	return $key;
+	push(@possible,[$key,$end_time]);
+    }
+    if (@possible) {
+        # sort entries in order by slot end time
+	@possible = sort { $a->[1] <=> $b->[1] } @possible;
+	# pick one of the entries in the top 10% in small queues and one
+	# of the first ten entries in large queues
+	#my $ten_percent = int($#possible * 0.1);
+	#if ($ten_percent < 1 ) { $ten_percent = 1;  }
+	#if ($ten_percent > 10) { $ten_percent = 10; }
+	#my $max=($#possible < $ten_percent) ? $#possible : $ten_percent;
+	
+	#return $possible[int(rand($max))][0];
+	return $possible[0][0];
     }
     return undef;
 }
 
 sub find_mid_grade {
     my ($queue,$symb,$cdom,$cnum)=@_;
-    my $todo=&Apache::lonnet::unescape($env{'form.gradingkey'});
-    my $me=$env{'user.name'}.'@'.$env{'user.domain'};
+    my $todo=&unescape($env{'form.gradingkey'});
+    my $me=$env{'user.name'}.':'.$env{'user.domain'};
     if ($todo) {
 	my $who=&queue_key_locked($queue,$todo,$cdom,$cnum);
 	if ($who eq $me) { return $todo; }
@@ -1234,7 +1712,7 @@ sub find_mid_grade {
 
 sub lock_key {
     my ($queue,$todo)=@_;
-    my $me=$env{'user.name'}.'@'.$env{'user.domain'};
+    my $me=$env{'user.name'}.':'.$env{'user.domain'};
     my (undef,$cid)=&Apache::lonxml::whichuser();
     my $cnum=$env{'course.'.$cid.'.num'};
     my $cdom=$env{'course.'.$cid.'.domain'};
@@ -1254,6 +1732,8 @@ sub get_queue_symb_status {
 	$cnum=$env{'course.'.$cid.'.num'};
 	$cdom=$env{'course.'.$cid.'.domain'};
     }
+    my $classlist=&get_limited_classlist();
+
     my $regexp="^$symb\0";
     my %queue=&Apache::lonnet::dump($queue,$cdom,$cnum,$regexp);
     my ($tmp)=%queue;
@@ -1263,6 +1743,7 @@ sub get_queue_symb_status {
 	next if ($key=~/locked$/);
 	next if ($key=~/timestamp$/);
 	my ($symb,$uname,$udom) = &decode_queue_key($key);
+	next if (!defined($classlist->{$uname.':'.$udom}));
 	push(@users,"$uname:$udom");
     }
     return @users;
@@ -1277,26 +1758,36 @@ sub get_from_queue {
     my $todo=&find_mid_grade($queue,$symb,$cdom,$cnum);
     &Apache::lonxml::debug("found ".join(':',&decode_queue_key($todo)));
     if ($todo) { return $todo; }
+    my $attempts=0;
+
+    my $classlist=&get_limited_classlist();
+
     while (1) {
+	if ($attempts > 2) {
+	    # tried twice to get a queue entry, giving up
+	    return (undef,'unable');
+	}
 	my $starttime=time;
 	&Apache::lonnet::cput($queue,{"$symb\0timestamp"=>$starttime},
 			      $cdom,$cnum);
 	&Apache::lonxml::debug("$starttime");
 	my $regexp="^$symb\0queue\0";
+	#my $range= ($attempts < 1 ) ? '0-100' : '0-400';
+
 	my %queue=&Apache::lonnet::dump($queue,$cdom,$cnum,$regexp);
 	#make a pass looking for a user _not_ in my section
 	if ($env{'request.course.sec'}) {
 	    &Apache::lonxml::debug("sce");
 	    $todo=&pick_from_queue_data($queue,$env{'request.course.sec'},
-					\%queue,$cdom,$cnum);
+					\%queue,$cdom,$cnum,$classlist);
 	    &Apache::lonxml::debug("sce $todo");
 	}
 	# no one _not_ in our section so look for any user that is
 	# ready for grading
 	if (!$todo) {
 	    &Apache::lonxml::debug("no sce");
-	    $todo=&pick_from_queue_data($queue,$env{'request.course.sec'},
-					\%queue,$cdom,$cnum);
+	    $todo=&pick_from_queue_data($queue,undef,\%queue,$cdom,$cnum,
+					$classlist);
 	    &Apache::lonxml::debug("no sce $todo");
 	}
 	# no user to grade 
@@ -1304,7 +1795,10 @@ sub get_from_queue {
 	&Apache::lonxml::debug("got $todo");
 	# otherwise found someone so lets try to lock them
 	# unless someone else already picked them
-	if (!&lock_key($queue,$todo)) { next; }
+	if (!&lock_key($queue,$todo)) {
+	    $attempts++;
+	    next;
+	}
 	my (undef,$endtime)=
 	    &Apache::lonnet::get($queue,["$symb\0timestamp"],
 				 $cdom,$cnum);
@@ -1323,6 +1817,7 @@ sub get_from_queue {
 		&Apache::lonnet::del($queue,["$todo\0locked"],
 				     $cdom,$cnum);
 		&Apache::lonxml::debug("del");
+		$attempts++;
 		next;
 	    }
 	}
@@ -1337,23 +1832,23 @@ sub select_user {
 
     my @chosen_sections=
 	&Apache::loncommon::get_env_multiple('form.chosensections');
-    &Apache::grades::init_perm();
-    my ($classlist,$section,$fullname)=&Apache::grades::getclasslist(\@chosen_sections,);
-    &Apache::grades::reset_perm();
+
+    my $classlist = &get_limited_classlist(\@chosen_sections);
     
     my $result;
     if (!(grep(/^all$/,@chosen_sections))) {
 	$result.='<p> Showing only sections <tt>'.join(', ',@chosen_sections).
 	    '</tt>.</p> '."\n";
     }
-    $result.='<table border="1">';
+    $result.=&Apache::loncommon::start_data_table();
 
-    foreach my $student (sort {lc($$fullname{$a}) cmp lc($$fullname{$b}) } keys %$fullname) {
+    foreach my $student (sort {lc($classlist->{$a}[&Apache::loncoursedata::CL_FULLNAME()]) cmp lc($classlist->{$b}[&Apache::loncoursedata::CL_FULLNAME()]) } (keys(%$classlist))) {
 	my ($uname,$udom) = split(/:/,$student);
 	
 	my $cnum=$env{'course.'.$cid.'.num'};
 	my $cdom=$env{'course.'.$cid.'.domain'};
-	my %status = &get_student_status($symb,$cdom,$cnum,$udom,$uname);
+	my %status = &get_student_status($symb,$cdom,$cnum,$udom,$uname,
+					 'Task');
 	my $queue = 'none';
 	my $cannot_grade;
 	if ($status{'reviewqueue'} =~ /^(in_progress|enqueue)$/) {
@@ -1368,9 +1863,10 @@ sub select_user {
 	    }
 	}
 	my $todo = 
-	    &Apache::lonnet::escape(&encode_queue_key($symb,$udom,$uname));
+	    &escape(&encode_queue_key($symb,$udom,$uname));
 	if ($cannot_grade) {
-	    $result.='<tr><td>&nbsp;</td><td>'.$fullname->{$student}.
+	    $result.=&Apache::loncommon::start_data_table_row().
+		'<td>&nbsp;</td><td>'.$classlist->{$student}[&Apache::loncoursedata::CL_FULLNAME()].
 		'</td><td>';
 	} else {
 	    my $seclist;
@@ -1378,10 +1874,10 @@ sub select_user {
 		$seclist.='<input type="hidden" name="chosensections" 
                                value="'.$sec.'" />';
 	    }
+	    $result.=&Apache::loncommon::start_data_table_row();
 	    $result.=<<RESULT;
-<tr>
   <td>
-    <form method="POST">
+    <form style="display: inline" method="post">
       <input type="hidden" name="gradingkey" value="$todo" />
       <input type="hidden" name="queue" value="$queue" />
       <input type="hidden" name="webgrade" value="no" />
@@ -1389,7 +1885,7 @@ sub select_user {
       <input type="submit" name="submit" value="Regrade" />
       $seclist
     </form>
-  <td>$fullname->{$student}</td>
+  <td>$classlist->{$student}[&Apache::loncoursedata::CL_FULLNAME()] <tt>($student)</tt></td>
   <td>
 RESULT
         }
@@ -1409,6 +1905,9 @@ RESULT
 	if ($status{'version'}) {
 	    $result .= ' '.&mt('Version').' '.$status{'version'};
 	}
+	if ($status{'grader'}) {
+	    $result .= ' '.&mt('(Graded by [_1])',$status{'grader'}).' ';
+	}
 	$result.= '</td><td>';
 	if ($status{'reviewqueue'} eq 'enqueued') {
 	    $result .= &mt('Awaiting Review');
@@ -1425,9 +1924,9 @@ RESULT
 	} else {
 	    $result.="&nbsp;";
 	}
-	$result.= '</td></tr>';
+	$result.= '</td>'.&Apache::loncommon::end_data_table_row();
     }
-    $result.='</table>';
+    $result.=&Apache::loncommon::end_data_table();
     return $result;
 }
 
@@ -1439,9 +1938,9 @@ sub get_student_status {
     if ($type eq 'Task') {
 	my %record = &Apache::lonnet::restore($symb,$env{'request.course.id'},
 					  $udom,$uname);
-	$status{'status'}=$record{'resource.status'};
-	$status{'version'}=$record{'resource.version'};
-	$status{'grader'}=$record{'resource.grader'};
+	$status{'status'}=$record{'resource.0.status'};
+	$status{'version'}=$record{'resource.0.version'};
+	$status{'grader'}=$record{'resource.0.regrader'};
     }
     $status{'reviewqueue'}=
 	&check_queue_for_key($cdom,$cnum,'reviewqueue',
@@ -1472,6 +1971,10 @@ sub end_ClosingParagraph {
     return $result;
 }
 
+sub get_dim_id {
+    return $Apache::bridgetask::dimension[-1];
+}
+
 sub get_id {
     my ($parstack,$safeeval)=@_;
     my $id=&Apache::lonxml::get_param('id',$parstack,$safeeval);
@@ -1479,18 +1982,78 @@ sub get_id {
     return $id;
 }
 
-my %dimension;
-sub start_Dimension {
+sub start_Setup {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
-    undef(%dimension);
-    my $dim_id=&get_id($parstack,$safeeval);
-    $Apache::bridgetask::dimension=$dim_id;
-    push(@Apache::bridgetask::dimensionlist,$dim_id);
-    undef(@Apache::bridgetask::instance);
-    $Apache::bridgetask::dimensionmandatory{$dim_id}=
-	&Apache::lonxml::get_param('Mandatory',$parstack,$safeeval);
+    #undef(%dimension);
+    my $dim = &get_id($parstack,$safeeval);
+    push(@Apache::bridgetask::dimension,$dim);
+    &Apache::lonxml::startredirection();
+    return &internal_location($dim);
+}
+
+{
+    my @allowed;
+    sub enable_dimension_parsing {
+	my ($id) = @_;
+	push(@allowed,$id);
+    }
+    sub disable_dimension_parsing {
+	pop(@allowed);
+    }
+    sub skip_dimension_parsing {
+	my ($check) = @_;
+	if (!@allowed) { return 0;}
+	# if unspecified allow any id
+	if ($allowed[-1] eq undef) { return 0;}
+
+	return ($check ne $allowed[-1]);
+    }
+}
+
+sub start_Question { return &start_Dimension(@_); }
+sub start_Dimension {
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+    my $dim = &get_id($parstack,$safeeval);
+    my $previous_dim;
+    if (@Apache::bridgetask::dimension) {
+	$previous_dim = $Apache::bridgetask::dimension[-1];
+	push(@{$Apache::bridgetask::dimension{$previous_dim}{'contains'}},
+	     $dim);
+	if(&skip_dimension_parsing($dim)) {
+	    $dimension{$previous_dim}{'criteria.'.$dim} =
+		$token->[4]
+		.&Apache::lonxml::get_all_text('/'.$tagstack->[-1],$parser,
+					      $style)
+		.'</'.$tagstack->[-1].'>';
+	}
+	$dimension{$previous_dim}{'criteria.'.$dim.'.type'}='dimension';
+	$dimension{$previous_dim}{'criteria.'.$dim.'.mandatory'}=
+	    &Apache::lonxml::get_param('Mandatory',$parstack,$safeeval);
+	push(@{$dimension{$previous_dim}{'criterias'}},$dim);
+	$dimension{$dim}{'nested'}=$previous_dim;
+	&Apache::lonxml::debug("adding $dim as criteria to $previous_dim");
+    } else {
+	$Apache::bridgetask::top_dimensionlist{$dim}{'manadatory'}=
+	    &Apache::lonxml::get_param('Mandatory',$parstack,$safeeval);
+    }
+    push(@Apache::bridgetask::dimension,$dim);
     &Apache::lonxml::startredirection();
-    return &internal_location($dim_id);
+    &enable_dimension_parsing($dim);
+    return &internal_location($dim);
+}
+
+sub start_QuestionText {
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+    my $dim = &get_dim_id();
+    my $text=&Apache::lonxml::get_all_text('/questiontext',$parser,$style);
+    if ($target eq 'grade' || $target eq 'web' || $target eq 'webgrade') {
+	$dimension{$dim}{'questiontext'}=$text;
+    }
+    return '';
+}
+
+sub end_QuestionText {
+    return '';
 }
 
 sub get_instance {
@@ -1500,7 +2063,7 @@ sub get_instance {
 	$rand_alg eq '64bit2' || $rand_alg eq '64bit3' ||
 	$rand_alg eq '64bit4' ) {
 	&Apache::response::pushrandomnumber();
-	my @order=&Math::Random::random_permutation(@{$dimension{'instances'}});
+	my @order=&Math::Random::random_permutation(@{$dimension{$dim}{'instances'}});
 	my $num=@order;
 	my $version=&get_version();
 	my $which=($version-1)%$num;
@@ -1512,51 +2075,92 @@ sub get_instance {
 	if (defined($instance)) { return $instance; }
 
 	&Apache::response::pushrandomnumber();
-	my @instances = @{$dimension{'instances'}};
-	# remove disabled instances
-	for (my $i=0; $i < $#instances; $i++) {
-	    if ($dimension{$instances[$i].'.disabled'}) {
-		splice(@instances,$i,1);
-		$i--;
+	if (ref($dimension{$dim}{'instances'}) eq 'ARRAY') {
+	    my @instances = @{$dimension{$dim}{'instances'}};
+	    # remove disabled instances
+	    for (my $i=0; $i < $#instances; $i++) {
+		if ($dimension{$dim}{$instances[$i].'.disabled'}) {
+		    splice(@instances,$i,1);
+		    $i--;
+		}
+	    }
+	    @instances = &Math::Random::random_permutation(@instances);
+	    $instance  = $instances[($version-1)%scalar(@instances)];
+	    if ($version =~ /^\d$/) {
+		$Apache::lonhomework::results{"resource.$version.0.$dim.instance"} = 
+		    $instance;
+		$Apache::lonhomework::results{'INTERNAL_store'} = 1; 
 	    }
 	}
-	@instances = &Math::Random::random_permutation(@instances);
-	$instance  = $instances[($version-1)%scalar(@instances)];
-	$Apache::lonhomework::results{"resource.$version.0.$dim.instance"} = 
-	    $instance;
-	$Apache::lonhomework::results{'INTERNAL_store'} = 1; 
 	&Apache::response::poprandomnumber();
 	return $instance;
     }
 }
 
+sub get_criteria {
+    my ($what,$version,$dim,$id) = @_;
+    my $type = $dimension{$dim}{'criteria.'.$id.'.type'};
+    my $prefix = ($type eq 'criteria') ? "$dim.$id"
+	                               : "$id";
+    my $entry = "resource.$version.0.$prefix.$what";
+    if (exists($Apache::lonhomework::results{$entry})) {
+	return $Apache::lonhomework::results{$entry};
+    }
+    return $Apache::lonhomework::history{$entry};
+}
+
 {
     my $last_link;
+    sub link {
+	my ($id) = @_;
+	$id =~ s/\./_/g;
+	return 'LC_GRADING_criteria_'.$id;
+    }
+    sub end_Question { return &end_Dimension(@_); }
     sub end_Dimension {
 	my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
 	my $result=&Apache::lonxml::endredirection();
 	my $dim=&get_id($parstack,$safeeval);
+	if (&skip_dimension_parsing($dim)) {
+	    &disable_dimension_parsing($dim);
+	    pop(@Apache::bridgetask::dimension);
+	    return;
+	}
 	my $instance=&get_instance($dim);
 	my $version=&get_version();
 	if ($target eq 'web') {
-	    @Apache::scripttag::parser_env = @_;
-	    $result.=&Apache::scripttag::xmlparse($dimension{'intro'});
+	    $result .= &nested_parse(\$dimension{$dim}{'intro'},[@_]);
 	    my @instances = $instance;
 	    if (&Apache::response::showallfoils()) {
-		@instances = @{$dimension{'instances'}};
+		@instances = @{$dimension{$dim}{'instances'}};
 	    }
+	    my $shown_question_text;
 	    foreach my $instance (@instances) {
-		@Apache::scripttag::parser_env = @_;
-		$result.=&Apache::scripttag::xmlparse($dimension{$instance.'.text'});
-		if ($Apache::lonhomework::history{"resource.$version.status"} eq 'pass' ||
-		    $Apache::lonhomework::history{"resource.$version.status"} eq 'fail') {
-
-		    my $dim_status=$Apache::lonhomework::history{"resource.$version.$dim.status"};
+		$result .= &nested_parse(\$dimension{$dim}{$instance.'.text'},
+					 [@_]);
+		$result .= &nested_parse(\$dimension{$dim}{'questiontext'},
+					 [@_],{'set_dim_id' => undef});
+		my $task_status = 
+		    $Apache::lonhomework::history{"resource.$version.0.status"};
+		if ($task_status ne 'pass' && $task_status ne 'fail') {
+
+		    foreach my $id (@{$dimension{$dim}{$instance.'.criterias'}},
+				    @{$dimension{$dim}{'criterias'}}) {
+			my $type = $dimension{$dim}{'criteria.'.$id.'.type'};
+			&Apache::lonxml::debug("$id is $type");
+			if ($type eq 'dimension') {
+			    $result.=
+				&nested_parse(\$dimension{$dim}{'criteria.'.$id},
+					      [@_],{'set_dim_id' => $id});
+			}
+		    }
+		} else {
+		    my $dim_status=$Apache::lonhomework::history{"resource.$version.0.$dim.status"};
 		    my $mandatory='Mandatory';
 		    if ($Apache::bridgetask::dimensionmandatory{$dim} eq 'N') {
 			$mandatory='Optional';
 		    }
-		    my $dim_info="<div class='$dim_status'>\n";
+		    my $dim_info="<div class='LC_$dim_status LC_question_grade'>\n";
 		    if ($dim_status eq 'pass') {
 			$dim_info.='<h3>Question : you passed this '.$mandatory.' question</h3>';
 		    }
@@ -1567,32 +2171,42 @@ sub get_instance {
 		    my $man_passed=0;
 		    my $opt_count=0;
 		    my $opt_passed=0;
-		    foreach my $id (@{$dimension{$instance.'.criterias'}}) {
-			if ($dimension{$instance.'.criteria.'.$id.'.mandatory'} 
+		    foreach my $id ( @{$dimension{$dim}{$instance.'.criterias'}},
+				     @{$dimension{$dim}{'criterias'}} ) {
+			my $status = &get_criteria('status',$version,$dim,$id);
+			if ($dimension{$dim}{'criteria.'.$id.'.mandatory'} 
 			    eq 'N') {
 			    $opt_count++;
-			    if ($Apache::lonhomework::history{"resource.$version.$dim.$instance.$id.status"} eq 'pass') {
-				$opt_passed++;
-			    }
+			    if ($status eq 'pass') { $opt_passed++; }
 			} else {
 			    $man_count++;
-			    if ($Apache::lonhomework::history{"resource.$version.$dim.$instance.$id.status"} eq 'pass') {
-				$man_passed++;
-			    }
+			    if ($status eq 'pass') { $man_passed++; }
 			}
 		    }
 		    if ($man_passed eq $man_count) { $man_passed='all'; }
-		    my $opt_req=$dimension{$instance.'.optionalrequired'};
-		    if ($opt_req !~ /\S/) { $opt_req='0'; }
+
+		    my $opt_req=$dimension{$dim}{$instance.'.optionalrequired'};
+		    if ($opt_req !~ /\S/) {
+			$opt_req=
+			    &Apache::lonxml::get_param('OptionalRequired',
+						       $parstack,$safeeval);
+			if ($opt_req !~ /\S/) { $opt_req = 0; }
+		    }
 		    $dim_info.="\n<p>".&mt('You passed [_1] of the [_2] mandatory components and [_3] of the [_4] optional components, of which you were required to pass [_5].',$man_passed,$man_count,$opt_passed,$opt_count,$opt_req)."</p>\n</div>";
 
 		    my $internal_location=&internal_location($dim);
 		    $result=~s/\Q$internal_location\E/$dim_info/;
 
-		    foreach my $id (@{$dimension{$instance.'.criterias'}}) {
-			my $status=$Apache::lonhomework::history{"resource.$version.$dim.$instance.$id.status"};
-			my $comment=$Apache::lonhomework::history{"resource.$version.$dim.$instance.$id.comment"};
-			my $mandatory=($dimension{$instance.'.criteria.'.$id.'.mandatory'} ne 'N');
+		    foreach my $id (@{$dimension{$dim}{$instance.'.criterias'}},
+				    @{$dimension{$dim}{'criterias'}}) {
+			my $type = $dimension{$dim}{'criteria.'.$id.'.type'};
+			if ($type eq 'dimension') {
+			    $result.=$dimension{$id}{'result'};
+			    next;
+			}
+			my $status= &get_criteria('status', $version,$dim,$id);
+			my $comment=&get_criteria('comment',$version,$dim,$id);
+			my $mandatory=($dimension{$dim}{'criteria.'.$id.'.mandatory'} ne 'N');
 			if ($mandatory) {
 			    $mandatory='Mandatory';
 			} else {
@@ -1605,14 +2219,16 @@ sub get_instance {
 			}
 			my $status_display=$status;
 			$status_display=~s/^([a-z])/uc($1)/e;
-			@Apache::scripttag::parser_env = @_;
-			$result.='<div class="'.$status.'"><h4>'.$mandatory.
-			    ' Criteria</h4><p>';
-			@Apache::scripttag::parser_env = @_;
-			$result.=&Apache::scripttag::xmlparse($dimension{$instance.'.criteria.'.$id});
-			$result.='</p><p class="grade">'.$status_display.'</p>';
-			if ($Apache::lonhomework::history{"resource.$version.$dim.$instance.$id.comment"}) {
-			    $result.='<p class="comment">'.$Apache::lonhomework::history{"resource.$version.$dim.$instance.$id.comment"}.'</p>';
+			$result.=
+			    '<div class="LC_'.$status.' LC_criteria"><h4>'
+			    .$mandatory.' Criteria</h4><p>';
+			$result.=
+			    &nested_parse(\$dimension{$dim}{'criteria.'.$id},
+					  [@_],{'set_dim_id' => $id});
+			$result.='</p><p class="LC_grade">'.$status_display.'</p>';
+			if ($comment) {
+			    $result.='<p class="LC_comment">'.
+				&mt('Comment: [_1]',$comment).'</p>';
 			}
 			$result.='</div>';
 		    }
@@ -1620,46 +2236,82 @@ sub get_instance {
 	    }
 	} elsif ($target eq 'webgrade') {
 	    # in case of any side effects that we need
-	    @Apache::scripttag::parser_env = @_;
-	    &Apache::scripttag::xmlparse($dimension{'intro'});
-	    @Apache::scripttag::parser_env = @_;
-	    &Apache::scripttag::xmlparse($dimension{$instance.'.text'});
-	    foreach my $id (@{$dimension{$instance.'.criterias'}}) {
-		my $link='criteria_'.$instance.'_'.$id;
-		my $status=$Apache::lonhomework::history{"resource.$version.$dim.$instance.$id.status"};
-		$result.='<tr><td width="100%" valign="top">'.
-		    '<a name="'.$link.'" />'.
-		    '<a name="next_'.$last_link.'" />'.
-		    '<br /><textarea enabled="false" style="width:100%" rows="8" width="25" wrap="hard">';
-		@Apache::scripttag::parser_env = @_;
-		$result.=&Apache::scripttag::xmlparse($dimension{$instance.'.criteria.'.$id});
-		$result.='</textarea>'.
-		    #$dimension{$instance.'.criteria.'.$id}.
-		    '</td>'.
-		    '<td><nobr>Additional Comment for Student</nobr> <br />'.
-		    '<textarea style="width:100%" rows="8" width="25" wrap="hard" name="HWVAL_comment_'.$link.'">'.&HTML::Entities::encode($Apache::lonhomework::history{"resource.$version.$dim.$instance.$id.comment"}).'</textarea>'.
-		    '</td>'.
-		    '<td>'.
-		    '<nobr><label><input type="radio" name="HWVAL_'.$link.'" value="ungraded" '.($status eq 'ungraded' || !$status ? 'checked="checked"':'').' />'.&mt('Ungraded').'</label></nobr><br />'.
-		    '<label><input type="radio" name="HWVAL_'.$link.'" value="pass" '.($status eq 'pass' ? 'checked="checked"':'').' />'.&mt('Pass').'</label><br />'.
-		    '<label><input type="radio" name="HWVAL_'.$link.'" value="fail" '.($status eq 'fail' ? 'checked="checked"':'').' />'.&mt('Fail').'</label><br />'.
-		    '<label><input type="radio" name="HWVAL_'.$link.'" value="review" '.($status eq 'review' ? 'checked="checked"':'').' />'.&mt('Review').'</label><br />'.
-		    '</td>'.
-		    '<td>'.
-		    '<a href="#'.$last_link.'">Prev</a><br />'.
-		    '<a href="#next_'.$link.'">Next</a><br /><br /><br />'.
-		    '</td></tr>';
+	    &nested_parse(\$dimension{$dim}{'intro'},[@_]);
+	    &nested_parse(\$dimension{$dim}{$instance.'.text'},[@_]);
+	    $result.=
+		&nested_parse(\$dimension{$dim}{'questiontext'},[@_],
+			      {'set_dim_id'          => undef,
+			       'delayed_dim_results' => 1});
+	    foreach my $id (@{$dimension{$dim}{$instance.'.criterias'}},
+			    @{$dimension{$dim}{'criterias'}} ) {
+		my $type = $dimension{$dim}{'criteria.'.$id.'.type'};
+		if ($type eq 'dimension') {
+		    # dimensional 'criteria' don't get assigned grades
+		    $result.=
+			&nested_parse(\$dimension{$dim}{'criteria.'.$id},
+				      [@_],{'set_dim_id' => $id});
+		    next;
+		}
+
+		my $link=&link($id);
+		my $status= &get_criteria('status',$version,$dim,$id);
+		$result.='<div class="LC_GRADING_criteria" id="'.$link.'">'."\n".
+		    '<div class="LC_GRADING_criteriatext" id="next_'.$last_link.'">'."\n";
+		$result.=
+		    &nested_parse(\$dimension{$dim}{'criteria.'.$id},[@_]);
+
+		$result.='</div>'."\n".
+		    '<div class="LC_GRADING_grade">'."\n".
+		    '<label class="LC_GRADING_ungraded"><input type="radio" name="HWVAL_'.$link.'" value="ungraded" '.($status eq 'ungraded' || !$status ? 'checked="checked"':'').' />'.&mt('Ungraded').'</label>'."\n".
+		    '<label class="LC_GRADING_fail"><input type="radio" name="HWVAL_'.$link.'" value="fail" '.($status eq 'fail' ? 'checked="checked"':'').' />'.&mt('Fail').'</label>'."\n".
+		    '<label class="LC_GRADING_pass"><input type="radio" name="HWVAL_'.$link.'" value="pass" '.($status eq 'pass' ? 'checked="checked"':'').' />'.&mt('Pass').'</label>'."\n".
+		    '<label class="LC_GRADING_review"><input type="radio" name="HWVAL_'.$link.'" value="review" '.($status eq 'review' ? 'checked="checked"':'').' />'.&mt('Review').'</label>'."\n".
+		    '</div>'."\n".
+		    '<label class="LC_GRADING_comment">'.&mt('Additional Comment for Student')."\n".
+		    '<textarea class="LC_GRADING_comment_area" name="HWVAL_comment_'.$link.'">'.&HTML::Entities::encode(&get_criteria('comment',$version,$dim,$id),'<>"&').'</textarea>'."\n".
+		    '</label>'."\n".
+		    '<ul class="LC_GRADING_navbuttons">'."\n".
+		    '<li><a href="#'.$last_link.'">Prev</a></li>'."\n".
+		    '<li><a href="#next_'.$link.'">Next</a></li>'."\n".
+		    '</ul>'."\n".
+                    '</div>'."\n";
+		$result.=&grading_history($version,$dim,$id);
 		$last_link=$link;
 	    }
+	    if (&nest()) {
+		&Apache::lonxml::debug(" for $dim stashing results into ".$dimension{$dim}{'nested'});
+		$dimension{$dimension{$dim}{'nested'}}{'result'}.=$result;
+		undef($result);
+	    }
 	} elsif ($target eq 'grade' && $env{'form.webgrade'}) {
 	    my $optional_passed=0;
 	    my $mandatory_failed=0;
 	    my $ungraded=0;
 	    my $review=0;
-	    foreach my $id (@{$dimension{$instance.'.criterias'}}) {
-		my $status=$Apache::lonhomework::results{"resource.$version.$dim.$instance.$id.status"}=$env{'form.HWVAL_criteria_'.$instance.'_'.$id};
-		$Apache::lonhomework::results{"resource.$version.$dim.$instance.$id.comment"}=$env{'form.HWVAL_comment_criteria_'.$instance.'_'.$id};
-		my $mandatory=($dimension{$instance.'.criteria.'.$id.'.mandatory'} ne 'N');
+
+	    $result .= &nested_parse(\$dimension{$dim}{'intro'},[@_]);
+	    $result .= &nested_parse(\$dimension{$dim}{$instance.'.text'},
+				     [@_]);
+	    $result .= &nested_parse(\$dimension{$dim}{'questiontext'},
+				     [@_],{'set_dim_id' => undef});
+
+	    foreach my $id (@{$dimension{$dim}{$instance.'.criterias'}},
+			    @{$dimension{$dim}{'criterias'}}) {
+		my $link=&link($id);
+
+		my $type = $dimension{$dim}{'criteria.'.$id.'.type'};
+		if ($type eq 'criteria') {
+		    # dimensional 'criteria' don't get assigned grades
+		    $Apache::lonhomework::results{"resource.$version.0.$dim.$id.status"}=$env{'form.HWVAL_'.$link};
+		    $Apache::lonhomework::results{"resource.$version.0.$dim.$id.comment"}=$env{'form.HWVAL_comment_'.$link};
+		} else {
+		    $result .=
+			&nested_parse(\$dimension{$dim}{'criteria.'.$id},
+				      [@_],{'set_dim_id' => $id});
+		}
+		my $status= &get_criteria('status',$version,$dim,$id);
+
+		my $mandatory=($dimension{$dim}{'criteria.'.$id.'.mandatory'} ne 'N');
 		if ($status eq 'pass') {
 		    if (!$mandatory) { $optional_passed++; }
 		} elsif ($status eq 'fail') {
@@ -1672,40 +2324,120 @@ sub get_instance {
 		    $ungraded++;
 		}
 	    }
-	    if ($optional_passed < $dimension{$instance.'.optionalrequired'}) {
+	    # FIXME optional required can apply to only <instance> right now...
+	    my $opt_req=$dimension{$dim}{$instance.'.optionalrequired'};
+	    if ($opt_req !~ /\S/) {
+		$opt_req=
+		    &Apache::lonxml::get_param('OptionalRequired',
+					       $parstack,$safeeval);
+		if ($opt_req !~ /\S/) { $opt_req = 0; }
+	    }
+	    if ($optional_passed < $opt_req) {
 		$mandatory_failed++;
 	    }
-	    &Apache::lonxml::debug("all instance ".join(':',@{$dimension{$instance.'.criterias'}})." results -> m_f $mandatory_failed o_p $optional_passed u $ungraded r $review");
+	    &Apache::lonxml::debug("all instance ".join(':',@{$dimension{$dim}{$instance.'.criterias'}})." results -> m_f $mandatory_failed o_p $optional_passed u $ungraded r $review");
 	    if ($review) {
-		$Apache::lonhomework::results{"resource.$version.$dim.status"}=
+		$Apache::lonhomework::results{"resource.$version.0.$dim.status"}=
 		    'review';
 	    } elsif ($ungraded) {
-		$Apache::lonhomework::results{"resource.$version.$dim.status"}=
+		$Apache::lonhomework::results{"resource.$version.0.$dim.status"}=
 		    'ungraded';
 	    } elsif ($mandatory_failed) {
-		$Apache::lonhomework::results{"resource.$version.$dim.status"}=
+		$Apache::lonhomework::results{"resource.$version.0.$dim.status"}=
 		    'fail';
 	    } else {
-		$Apache::lonhomework::results{"resource.$version.$dim.status"}=
+		$Apache::lonhomework::results{"resource.$version.0.$dim.status"}=
 		    'pass';
 	    }
 	} else {
 	    # any other targets no output
 	    undef($result);
 	}
+	&disable_dimension_parsing();
+	pop(@Apache::bridgetask::dimension);
+	return $result;
+    }
+
+    sub end_Setup {
+	my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+	my $result=&Apache::lonxml::endredirection();
+	my $dim=&get_id($parstack,$safeeval);
+	my $instance=&get_instance($dim);
+	my $version=&get_version();
+	if ($target eq 'web') {
+	    @Apache::scripttag::parser_env = @_;
+	    $result.=&Apache::scripttag::xmlparse($dimension{$dim}{'intro'});
+	    my @instances = $instance;
+	    if (&Apache::response::showallfoils()) {
+		@instances = @{$dimension{$dim}{'instances'}};
+	    }
+	    foreach my $instance (@instances) {
+		@Apache::scripttag::parser_env = @_;
+		$result.=&Apache::scripttag::xmlparse($dimension{$dim}{$instance.'.text'});
+		@Apache::scripttag::parser_env = @_;
+		$result.=&Apache::scripttag::xmlparse($dimension{$dim}{'questiontext'});
+	    }
+	} elsif ($target eq 'webgrade' 
+		 || $target eq 'grade' && $env{'form.webgrade'}) {
+	    # in case of any side effects that we need
+	    @Apache::scripttag::parser_env = @_;
+	    &Apache::scripttag::xmlparse($dimension{$dim}{'intro'});
+	    @Apache::scripttag::parser_env = @_;
+	    &Apache::scripttag::xmlparse($dimension{$dim}{$instance.'.text'});
+	    @Apache::scripttag::parser_env = @_;
+	    &Apache::scripttag::xmlparse($dimension{$dim}{'questiontext'});
+	} else {
+	    # any other targets no output
+	    undef($result);
+	}
+	pop(@Apache::bridgetask::dimension);
 	return $result;
     }
 }
 
+sub grading_history {
+    my ($version,$dim,$id) = @_;
+    if (!&Apache::lonnet::allowed('mgq',$env{'request.course.id'})) {
+	return '';
+    }
+    my ($result,$grader);
+    my $scope="resource.$version.0.$dim.$id";
+    foreach my $t (1..$Apache::lonhomework::history{'version'}) {
+	if (exists($Apache::lonhomework::history{$t.':resource.0.regrader'})) {
+	    my ($gname,$gdom) = 
+		split(':',$Apache::lonhomework::history{$t.':resource.0.regrader'});
+	    my $fullname = &Apache::loncommon::plainname($gname,$gdom);
+	    $grader = &Apache::loncommon::aboutmewrapper($fullname,
+							 $gname,$gdom);
+	}
+	my $entry;
+	if (exists($Apache::lonhomework::history{"$t:$scope.status"})) {
+	    $entry.="<tt>".$Apache::lonhomework::history{"$t:$scope.status"}.'</tt>';
+	}
+	if (exists($Apache::lonhomework::history{"$t:$scope.comment"})) {
+	    $entry.=' comment: "'.$Apache::lonhomework::history{"$t:$scope.comment"}.'"';
+	}
+	if ($entry) {
+	    $result.= "<li>$grader : $entry </li>";
+	}
+    }
+    if ($result) {
+	return '<ul class="LC_GRADING_pastgrading">'.$result.'</ul>';
+    }
+    return '';
+}
+
 sub start_IntroParagraph {
-    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     my $result;
-    if ($target eq 'web' || $target eq 'webgrade') {
-	if ($tagstack->[-2] eq 'Dimension') {
-	    $dimension{'intro'}=&Apache::lonxml::get_all_text('/introparagraph',$parser);
-	
-	} elsif ($target eq 'webgrade') {
-	    &Apache::lonxml::get_all_text('/introparagraph',$parser);
+    my $dim = &get_dim_id();
+    if ($target eq 'grade' || $target eq 'web' || $target eq 'webgrade') {
+	if ($tagstack->[-2] eq 'Dimension' || $tagstack->[-2] eq 'Question' ) {
+	    $dimension{$dim}{'intro'}=
+		&Apache::lonxml::get_all_text('/introparagraph',
+					      $parser,$style);
+       	} elsif ($tagstack->[-2] eq 'Task' && $target eq 'webgrade') {
+	    &Apache::lonxml::startredirection();
 	}
 	
     }
@@ -1713,19 +2445,24 @@ sub start_IntroParagraph {
 }
 
 sub end_IntroParagraph {
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+    if ($tagstack->[-2] eq 'Task' && $target eq 'webgrade') {
+	my $result = &Apache::lonxml::endredirection();
+    }
 }
 
 sub start_Instance {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
-    my $id=&get_id($parstack,$safeeval);
-    push(@{$dimension{'instances'}},$id);
-    push(@Apache::bridgetask::instance,$id);
+    my $dim = &get_dim_id();
+    my $id  = &get_id($parstack,$safeeval);
+    push(@{$dimension{$dim}{'instances'}},$id);
+    push(@{$Apache::bridgetask::instance{$dim}},$id);
     push(@Apache::bridgetask::instancelist,$id);
-    $dimension{$id.'.optionalrequired'}=
+    $dimension{$dim}{$id.'.optionalrequired'}=
 	&Apache::lonxml::get_param('OptionalRequired',$parstack,$safeeval);
     my $disabled = &Apache::lonxml::get_param('Disabled',$parstack,$safeeval);
     if (lc($disabled) eq 'yes') {
-	$dimension{$id.'.disabled'}='1';
+	$dimension{$dim}{$id.'.disabled'}='1';
     }
     return '';
 }
@@ -1734,11 +2471,12 @@ sub end_Instance {
 }
 
 sub start_InstanceText {
-    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
-    my $instance_id=$Apache::bridgetask::instance[-1];
-    my $text=&Apache::lonxml::get_all_text('/instancetext',$parser);
-    if ($target eq 'web' || $target eq 'webgrade') {
-	$dimension{$instance_id.'.text'}=$text;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+    my $dim = &get_dim_id();
+    my $instance_id=$Apache::bridgetask::instance{$dim}[-1];
+    my $text=&Apache::lonxml::get_all_text('/instancetext',$parser,$style);
+    if ($target eq 'grade' || $target eq 'web' || $target eq 'webgrade') {
+	$dimension{$dim}{$instance_id.'.text'}=$text;
     }
     return '';
 }
@@ -1748,15 +2486,26 @@ sub end_InstanceText {
 }
 
 sub start_Criteria {
-    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
-    my $instance_id=$Apache::bridgetask::instance[-1];
-    my $criteria=&Apache::lonxml::get_all_text('/criteria',$parser);
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+    my $criteria=&Apache::lonxml::get_all_text('/criteria',$parser,$style);
     if ($target eq 'web' || $target eq 'webgrade' || $target eq 'grade') {
+	my $dim = &get_dim_id();
 	my $id=&get_id($parstack,$safeeval);
-	$dimension{$instance_id.'.criteria.'.$id}=$criteria;
-	$dimension{$instance_id.'.criteria.'.$id.'.mandatory'}=
-	    &Apache::lonxml::get_param('Mandatory',$parstack,$safeeval);
-	push(@{$dimension{$instance_id.'.criterias'}},$id);
+	&Apache::lonxml::debug("Criteria $id with $dim");
+	if (&Apache::londefdef::is_inside_of($tagstack,'Instance')) {
+	    my $instance_id=$Apache::bridgetask::instance{$dim}[-1];
+	    $dimension{$dim}{"criteria.$instance_id.$id"}=$criteria;
+	    $dimension{$dim}{"criteria.$instance_id.$id.type"}='criteria';
+	    $dimension{$dim}{"criteria.$instance_id.$id.mandatory"}=
+		&Apache::lonxml::get_param('Mandatory',$parstack,$safeeval);
+	    push(@{$dimension{$dim}{$instance_id.'.criterias'}},"$instance_id.$id");
+	} else {
+	    $dimension{$dim}{'criteria.'.$id}=$criteria;
+	    $dimension{$dim}{'criteria.'.$id.'.type'}='criteria';
+	    $dimension{$dim}{'criteria.'.$id.'.mandatory'}=
+		&Apache::lonxml::get_param('Mandatory',$parstack,$safeeval);
+	    push(@{$dimension{$dim}{'criterias'}},$id);
+	}
     }
     return '';
 }
@@ -1780,7 +2529,7 @@ sub proctor_validation_screen {
 <h2>Proctor Validation</h2>
     <p>Your room's proctor needs to validate your access to this resource.</p>
     $msg
-<form name="checkout" method="POST" action="$env{'request.uri'}">
+<form name="checkout" method="post" action="$env{'request.uri'}">
 <input type="hidden" name="validate" value="yes" />
 <input type="hidden" name="submitted" value="yes" />
 <table>
@@ -1795,7 +2544,7 @@ sub proctor_validation_screen {
       <tr><td colspan="2">Student who should be logged in is:</td></tr>
       <tr><td>Name:</td><td>$name</td></tr>
       <tr><td>Student ID:</td><td>$env{'environment.id'}</td></tr>
-      <tr><td>Usename</td><td>$user\@$domain</td></tr>
+      <tr><td>Usename</td><td>$user:$domain</td></tr>
       <tr><td colspan="2"><img src="$url" /></td></tr>
     </table>
   </tr></td>