var submitDialog = new ModalDialog('ctl00_backgroundPanel', 'ctl00_progressStatusPanel', 314, 159);

submitDialog.initialize();

//JavaScript code included at jsUpdateProgress.js file
Sys.WebForms.PageRequestManager.getInstance().add_beginRequest(beginReq); 
Sys.WebForms.PageRequestManager.getInstance().add_endRequest(endReq);
  
function beginReq(sender, args){ 
	// shows the Popup 
	submitDialog.show();        
} 
 
function endReq(sender, args) { 
	//  shows the Popup 
	submitDialog.hide(); 
}