Index: lams_central/web/authoring/authoring.jsp
===================================================================
RCS file: /usr/local/cvsroot/lams_central/web/authoring/authoring.jsp,v
diff -u -r1.6.2.41 -r1.6.2.42
--- lams_central/web/authoring/authoring.jsp	3 Dec 2016 09:09:00 -0000	1.6.2.41
+++ lams_central/web/authoring/authoring.jsp	3 Dec 2016 09:41:13 -0000	1.6.2.42
@@ -375,7 +375,8 @@
 			<span><fmt:message key="authoring.fla.page.menu.arrange" /></span>
 		</button>
 				
-		<button id="previewButton" class="btn btn-default" onClick="javascript:MenuLib.openPreview()">
+		<button id="previewButton" class="btn btn-default" onClick="javascript:MenuLib.openPreview()"
+				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> 
 			<span><fmt:message key="authoring.fla.page.menu.preview" /></span>
 		</button>