Index: lams_central/web/addLesson.jsp
===================================================================
diff -u -r5ccaa5d3f475e93053eb657ace948a855f865a90 -r7f5de60cba2fa6ed056786c5461af6e29518723f
--- lams_central/web/addLesson.jsp	(.../addLesson.jsp)	(revision 5ccaa5d3f475e93053eb657ace948a855f865a90)
+++ lams_central/web/addLesson.jsp	(.../addLesson.jsp)	(revision 7f5de60cba2fa6ed056786c5461af6e29518723f)
@@ -293,11 +293,14 @@
 
 <hr class="separator" />
 <div class="container-fluid">
-	<button id="previewButton" class="btn btn-default" href="#" onClick="javascript:previewLesson()"><i class="fa fa-search-plus"></i>
+	<button id="previewButton" class="btn btn-default" href="#" onClick="javascript:previewLesson()"
+			data-loading-text="<i class='fa fa-circle-o-notch fa-spin'></i><span> <fmt:message key="authoring.fla.page.menu.preview" /></span>">
+		<i class="fa fa-search-plus"></i>
 		<fmt:message key="authoring.fla.page.menu.preview" />
 	</button>
 	<div class="pull-right">
-		<button id="addButton" class="btn btn-primary" href="#" onClick="javascript:addLesson()"><i class="fa fa-plus"></i> 
+		<button id="addButton" class="btn btn-primary" href="#" onClick="javascript:addLesson()">
+			<i class="fa fa-plus"></i> 
 			<fmt:message key="button.add.now" />
 		</button>
 	</div>