fix font type tooltip

mindplot/src/main/javascript/widget/FontFamilyPanel.js

@@ -25,12 +25,12 @@ mindplot.widget.FontFamilyPanel = new Class({
     buildPanel: function() {
 
         var content = $("<div class='toolbarPanel' id='fontFamilyPanel'></div>");
-        content.innerHTML = '' +
+        content.html(
             '<div id="times" model="Times" class="toolbarPanelLink" style="font-family:times;">Times</div>' +
             '<div id="arial"  model="Arial" style="font-family:arial;">Arial</div>' +
             '<div id="tahoma" model="Tahoma" style="font-family:tahoma;">Tahoma</div>' +
-            '<div id="verdana" model="Verdana" style="font-family:verdana;">Verdana</div>';
-
+            '<div id="verdana" model="Verdana" style="font-family:verdana;">Verdana</div>'
+        );
         return content;
 
     }