diff --git a/grade/report/grader/index.php b/grade/report/grader/index.php
index 2f84e0fbc7f..d325f161f10 100644
--- a/grade/report/grader/index.php
+++ b/grade/report/grader/index.php
@@ -205,6 +205,12 @@ echo '<div id="hiddentooltiproot">tooltip panel</div>';
 YAHOO.namespace("graderreport");
 
 function init() {
+    // Adjust height of header c0
+    var rows = document.getElementsByClassName('heading_name_row');
+    var header_cell_region = YAHOO.util.Dom.getRegion(rows[rows.length-1].firstChild);
+    var height = header_cell_region.bottom - header_cell_region.top;
+    YAHOO.util.Dom.setStyle('studentheader', 'height', height + 'px');
+    
     // attach event listener to the table for mouseover and mouseout
     var table = document.getElementById('user-grades');
     YAHOO.util.Event.on(table, 'mouseover', YAHOO.graderreport.mouseoverHandler);
@@ -224,7 +230,6 @@ function init() {
     YAHOO.graderreport.panelEl.render(table);
 
     document.body.className += ' yui-skin-sam';
-
 }
 
 YAHOO.graderreport.mouseoverHandler = function (e) {
@@ -343,6 +348,7 @@ YAHOO.graderreport.mouseoutHandler = function (e) {
 
 
 YAHOO.util.Event.onDOMReady(init);
+
 //]]>
 </script>
 <?php
diff --git a/grade/report/grader/lib.php b/grade/report/grader/lib.php
index 012fe522df1..71004025a54 100644
--- a/grade/report/grader/lib.php
+++ b/grade/report/grader/lib.php
@@ -980,7 +980,7 @@ class grade_report_grader extends grade_report {
                         ';
             }
 
-            $studentshtml .= '<tr class="heading"><th class="header c0" scope="col"><a href="'.$this->baseurl.'&amp;sortitemid=firstname">'
+            $studentshtml .= '<tr class="heading"><th id="studentheader" class="header c0" scope="col"><a href="'.$this->baseurl.'&amp;sortitemid=firstname">'
                         . $strfirstname . '</a> '
                         . $firstarrow. '/ <a href="'.$this->baseurl.'&amp;sortitemid=lastname">' . $strlastname . '</a>'. $lastarrow .'</th>';