function getFieldValue (strFieldName)
{
    var strFieldValue;
    var objRegExp = new RegExp(strFieldName + "=([^&]+)","gi");

    if (objRegExp.test(location.search))
        strFieldValue = unescape(RegExp.$1);
    else strFieldValue="";

    return strFieldValue;
}

function setCookie(sName, sValue)
{
   date = new Date();
   date.setFullYear(date.getFullYear()+1);
   document.cookie = sName + "=" + escape(sValue) + "; expires=" + date.toGMTString() + "; path=/";
}

var affiliate_id = getFieldValue('sourceid');
if (affiliate_id != "") {
  setCookie('tiger_affiliate_id', affiliate_id );
}