//alert(document.referrer)

    var cDomain = self.location.hostname;
    if(cDomain.indexOf(".") < cDomain.lastIndexOf("."))
    {
      var domainOffset = cDomain.indexOf(".")+1
      cDomain = cDomain.substr(domainOffset);
    }

    if(document.referrer.indexOf(cDomain)==-1 && document.referrer!="" && document.cookie.indexOf("from=")==-1)
    {
        var expDays = 90;
        var exp = new Date(); 
        exp.setTime(exp.getTime() + (expDays*24*60*60*1000));
        var refdate = new Date();
        document.cookie = "from=" + escape(document.referrer) + "; expires=" + exp.toGMTString() + "; path=/" + "; domain=" + cDomain;
    }