function PopUpIFrame(launchUrl) {

   var height = 750;
   var width = 625;

   Ext.onReady(function() {

      Ext.BLANK_IMAGE_URL = './ext/resources/images/default/s.gif';

      var win = new Ext.Window({
         title: 'MyLearningPlan',
         renderTo: Ext.getBody(),
         width: width,
         id: 'windowId',
         height: height,
         autoScroll: true,
         scripts: false,
         closeable: true, 
         html: '<iframe style="overflow:auto;width:100%;height:100%;" frameborder="0"  src='+launchUrl+'></iframe>',
         buttonAlign: 'center',
         buttons: [
            {
               text:'Close Window', 
               handler:function() {
                  Ext.getCmp('windowId').close();
               }
            }
         ]
      });
      win.show();

   })
  
 }