--- loncom/interface/lonstatistics.pm	2003/05/27 14:51:24	1.71
+++ loncom/interface/lonstatistics.pm	2003/05/29 21:38:32	1.72
@@ -1,6 +1,6 @@
 # The LearningOnline Network with CAPA
 #
-# $Id: lonstatistics.pm,v 1.71 2003/05/27 14:51:24 matthew Exp $
+# $Id: lonstatistics.pm,v 1.72 2003/05/29 21:38:32 matthew Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -300,9 +300,10 @@ sub PrepareClasslist {
     @Students = @TmpStudents;
     # 
     # Now deal with that current student thing....
-    if (exists($ENV{'form.StudentAssessmentStudent'})) {
+    $curr_student = undef;
+    if (exists($ENV{'form.SelectedStudent'})) {
         my ($current_uname,$current_dom) = 
-            split(':',$ENV{'form.StudentAssessmentStudent'});
+            split(':',$ENV{'form.SelectedStudent'});
         my $i;
         for ($i = 0; $i<=$#Students; $i++) {
             next if (($Students[$i]->{'username'} ne $current_uname) || 
@@ -310,15 +311,17 @@ sub PrepareClasslist {
             $curr_student = $Students[$i];
             last; # If we get here, we have our student.
         }
-        if ($i == 0) {
-            $prev_student = 'none';
-        } else {
-            $prev_student = $Students[$i-1];
-        }
-        if ($i == $#Students) {
-            $next_student = 'none';
-        } else {
-            $next_student = $Students[$i+1];
+        if (defined($curr_student)) {
+            if ($i == 0) {
+                $prev_student = undef;
+            } else {
+                $prev_student = $Students[$i-1];
+            }
+            if ($i == $#Students) {
+                $next_student = undef;
+            } else {
+                $next_student = $Students[$i+1];
+            }
         }
     }
     #
@@ -329,7 +332,7 @@ sub PrepareClasslist {
             @SelectedStudentData = ($ENV{'form.StudentData'});
         }
     } else {
-        @SelectedStudentData = ('fullname');
+        @SelectedStudentData = ('username');
     }
     foreach (@SelectedStudentData) {
         if ($_ eq 'all') {
@@ -377,11 +380,7 @@ selected student.
 #######################################################
 #######################################################
 sub current_student { 
-    if (defined($curr_student)) {
-        return $curr_student;
-    } else {
-        return 'All Students';
-    }
+    return $curr_student;
 }
 
 #######################################################
@@ -399,11 +398,7 @@ in the list of students.  Or something.
 #######################################################
 #######################################################
 sub previous_student { 
-    if (defined($prev_student)) {
-        return $prev_student;
-    } else {
-        return 'No Student Selected';
-    }
+    return $prev_student;
 }
 
 #######################################################
@@ -421,11 +416,7 @@ to be viewed.
 #######################################################
 #######################################################
 sub next_student { 
-    if (defined($next_student)) {
-        return $next_student;
-    } else {
-        return 'No Student Selected';
-    }
+    return $next_student;
 }
 
 #######################################################
@@ -839,7 +830,8 @@ sub DisplayClasslist {
             if ($field eq 'fullname') {
                 $Str .= '<a href="/adm/statistics?reportSelected=';
                 $Str .= &Apache::lonnet::escape('student_assessment');
-                $Str .= '&StudentAssessmentStudent=';
+                $Str .= '&sort='.&Apache::lonnet::escape($ENV{'form.sort'});
+                $Str .= '&SelectedStudent=';
                 $Str .= &Apache::lonnet::escape($sname).'">';
                 $Str .= $student->{$field}.'&nbsp';
                 $Str .= '</a>';
@@ -940,7 +932,7 @@ sub handler {
     # Extract form elements from query string
     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
                                             ['sort','reportSelected',
-                                             'StudentAssessmentStudent']);
+                                             'SelectedStudent']);
     if (! exists($ENV{'form.reportSelected'})) {
         $ENV{'form.reportSelected'} = 'student_assessment';
     }