function traffic(document_referrer, isMobile)
	{
	if (document_referrer)
		{
		var ref = document_referrer;
		ref = escape(ref);
		ref = ref.replace('+', '%2B');
		ref = ref.replace('%20', '+');
		ref = ref.replace('*', '%2A');
		ref = ref.replace('/', '%2F');
		ref = ref.replace('@', '%40');
		ref = ref.replace('=', '%3D');
		ref = ref.replace('&', '%26');

		if (isMobile == 1)
			{
			document.write('<img src="http://www.wheelheaven.co.uk/traffic.php?isMobile=1&str=' + ref + '" border="0" width="1" height="1">');
			}
		else
			{
			document.write('<img src="http://www.wheelheaven.co.uk/traffic.php?isMobile=0&str=' + ref + '" border="0" width="1" height="1">');
			}
		}
	}