Index: lams_gradebook/web/includes/css/gradebook.css
===================================================================
diff -u -rc81f6bc91f57ba94de5f9631d889176668abc5af -ra83b0eec89979dce7415b02afdda324b14018dbb
--- lams_gradebook/web/includes/css/gradebook.css	(.../gradebook.css)	(revision c81f6bc91f57ba94de5f9631d889176668abc5af)
+++ lams_gradebook/web/includes/css/gradebook.css	(.../gradebook.css)	(revision a83b0eec89979dce7415b02afdda324b14018dbb)
@@ -1,49 +1,47 @@
 #select-lessons-area {
-	display: none;
-}
+  display: none; }
 
 #export-selected-lessons-button {
-	margin-bottom: 10px;
-}
+  margin-bottom: 10px; }
 
 #gbox_lessons-jqgrid {
-	margin-left: auto;
-	margin-right: auto;
-}
+  margin-left: auto;
+  margin-right: auto; }
 
-.ui-widget-content {
-    border: 0px solid #aaaaaa !important;
-}
+.ui-jqgrid.ui-widget-content {
+  border: 0px solid #aaaaaa !important; }
 
-
 /* Formatting buttons on the Gradebook Lesson screen */
 .gbTopButtonsContainer {
-	height: 30px;
-	padding: 0px !important;
-}
+  height: 30px;
+  padding: 0px !important; }
 
 .gbTopButtonsContainer div {
-	display: inline;
-}
+  display: inline; }
 
 .gbTopButtonsContainer a {
-	margin: 5px 5px 5px 0;
-}
+  margin: 5px 5px 5px 0; }
 
 .gbTopButtonsContainer button {
-	margin: 5px 5px 5px 0;
-}
+  margin: 5px 5px 5px 0; }
 
 .lockLabel {
-	margin: 10px 5px 5px 0;
-	display: block;
-}
+  margin: 10px 5px 5px 0;
+  display: block; }
 
 .markChartDiv {
-	margin-top: 10px;
-	margin-left: 10px;
-	margin-bottom: 10px;
-	width: 95%;
-	height: 500px;
-}
+  margin-top: 10px;
+  margin-left: 10px;
+  margin-bottom: 10px;
+  width: 95%;
+  height: 500px; }
 
+.tooltip {
+  position: absolute;
+  z-index: 999;
+  left: -9999px;
+  background-color: #dddddd;
+  padding: 5px;
+  border: thin solid #fff;
+  width: 250px;
+  font-size: 1.1em; }