--- loncom/homework/bridgetask.pm	2006/03/29 14:03:08	1.129
+++ loncom/homework/bridgetask.pm	2006/04/10 07:30:54	1.137
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA 
 # definition of tags that give a structure to a document
 #
-# $Id: bridgetask.pm,v 1.129 2006/03/29 14:03:08 albertel Exp $
+# $Id: bridgetask.pm,v 1.137 2006/04/10 07:30:54 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -455,7 +455,11 @@ sub start_Task {
 		    my $files = '<ul>';
 		    foreach my $file (@files) {
 			my $url="/uploaded/$domain/$user/portfolio$file";
-			$file = '<tt>'.$file.'</tt>';
+			if (! &Apache::lonnet::stat_file($url)) {
+			    $file = &mt('<font color="red"> Nonexistant file:</font> <tt>[_1]</tt>',$file);
+			} else {
+			    $file = '<tt>'.$file.'</tt>';
+			}
 			$files .= '<li>'.$file.'</li>';
 		    }
 		    $files.='</ul>';
@@ -970,7 +974,7 @@ DONEBUTTON
 	    &Apache::structuretags::finalize_storage();
 	}
     } elsif ($target eq 'webgrade') {
-	$result.="</div>\n<hr />";
+	$result.="</div>";
 	#$result.='<input type="submit" name="next" value="'.
 	#    &mt('Save &amp; Next').'" /> ';
 	#$result.='<input type="submit" name="end" value="'.
@@ -1315,8 +1319,13 @@ sub pick_from_queue_data {
     if (@possible) {
         # sort entries in order by slot end time
 	@possible = sort { $a->[1] <=> $b->[1] } @possible;
-	# pick one of the first ten entries
-	my $max=($#possible < 10) ? $#possible : 10;
+	# 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 undef;
@@ -1760,9 +1769,7 @@ sub get_instance {
 		my $link=&link($instance,$id);
 		my $status=$Apache::lonhomework::history{"resource.$version.0.$dim.$instance.$id.status"};
 		$result.='<div class="LC_GRADING_criteria" id="'.$link.'">'."\n".
-		    '<a name="'.$link.'" />'."\n".
-		    '<a name="next_'.$last_link.'" />'."\n".
-		    '<div class="LC_GRADING_criteriatext">'."\n";
+		    '<div class="LC_GRADING_criteriatext" id="next_'.$last_link.'">'."\n";
 		@Apache::scripttag::parser_env = @_;
 		$result.=&Apache::scripttag::xmlparse($dimension{$instance.'.criteria.'.$id});
 		$result.='</div>'."\n".
@@ -1872,9 +1879,6 @@ sub start_IntroParagraph {
 	
 	} elsif ($tagstack->[-2] eq 'Task' && $target eq 'webgrade') {
 	    &Apache::lonxml::startredirection();
-	} else {
-	    &Apache:;lonxml::error("Invalid use of <IntroParagraph> inside of <".$tagstack->[-2].">");
-	    &Apache::lonxml::get_all_text('/introparagraph',$parser,$style);
 	}
 	
     }