function popUp(URL) { 
day = new Date(); 
id = day.getTime(); 
eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width=700,height=500,left = 20,top = 20');"); 
}