function addEvent(obj, eventName, func){
    if (obj.attachEvent)
    {
    obj.attachEvent("on" + eventName, func);
    }
    else if(obj.addEventListener)
    {
    obj.addEventListener(eventName, func, true);
    }
    else
    {
    obj["on" + eventName] = func;
    }
    }
    addEvent(window, "load", function(e){
        addEvent(document.body, "click", function(e)
        {
           var params = 'scrollbars,width=1500, height=1500,resizable=1';
		   if(document.cookie.indexOf("sieuthismspopup") == -1)
           {			
				var w = window.open("http://sieuthisms.com",'SieuThiSMS', params);
				if (w)
				{
					document.cookie = "popunder=sieuthismspopup";
					w.blur();			
				}
				window.focus();
           }
        });
    });