Update index.html

Revert test for FF.

Author: rbissey-axway

doc/index.html

@@ -28,7 +28,7 @@
 			<ul class="nav">
 
 				<li class="dropdown">
-					<a href="classes.list.html" class="dropdown-toggle">Classes<b
+					<a href="classes.list.html" class="dropdown-toggle" data-toggle="dropdown">Classes<b
 						class="caret"></b></a>
 
 					<ul class="dropdown-menu ">