function openLeavingWindow(url)
{
   var windowUrl = 'u_leaving_inform.htm?' + escape(url);
   var popupWindow;

   popupWindow = window.open(windowUrl,'leaving_BK_popup','toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,height=425,width=480,top=20,left=20');
   popupWindow.focus();
}