var RequestURL = document.referrer;  //取到上一个页的地址
        var CurrentURL = location.href; //取当前页的URL;
     
      
       
        document.write("<script src=\"http://union.xenw.com/tj/cpl.aspx?action=xenw.com&RequestURL="+RequestURL+"&CurrentURL="+CurrentURL+"\" type=\"text/javascript\" language=\"javascript\"></script>");