function checkAndSetAffiliate()
{
	if (document.cookie.length > 0)
	{
		isSet = document.cookie.indexOf("SL_AFFILIATE=");
		
		if (isSet != -1)
		{
			return null; // SL_AFFILIATE already set.
		}
		else // set SLurl affiliate
		{
			 var today = new Date();
			 var expire = new Date();
			 expire.setTime(today.getTime() + 3600000*24*2);
			 document.cookie = "SL_AFFILIATE"+"="+escape("b1db2230e011387588f345e9410f7ab1")+";expires="+expire.toGMTString();
		}
	}
}