function setCookie(c_name,value,expiredays)
{
	var exdate=new Date();
	exdate.setDate(exdate.getDate()+expiredays);
	document.cookie=c_name+ "=" +escape(value)+
	((expiredays==null) ? "" : ";expires="+exdate.toGMTString());
}

function getCookie(c_name)
{
	if (document.cookie.length>0)
	{
		c_start=document.cookie.indexOf(c_name + "=");
		if (c_start!=-1)
		{
			c_start=c_start + c_name.length+1;
			c_end=document.cookie.indexOf(";",c_start);
			if (c_end==-1) c_end=document.cookie.length;
			return unescape(document.cookie.substring(c_start,c_end));
		}
	}
	return "";
}

function getParam( name )
{
	name = name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
	var regexS = "[\\?&]"+name+"=([^&#]*)";
	var regex = new RegExp( regexS );
	var results = regex.exec( window.location.href );
	if( results == null )
		return "";
	else
		return results[1];
}

function trackingForward(url)
{
	var newurl=url;
	utm_source=getCookie('utm_source');
        if(utm_source == "" && getParam('utm_source') != "") {
		setCookie('utm_source', getParam('utm_source'),1);
		setCookie('utm_medium', getParam('utm_medium'),1);
		setCookie('utm_term', getParam('utm_term'),1);
		setCookie('utm_content', getParam('utm_content'),1);
		setCookie('utm_campaign', getParam('utm_campaign'),1);
        }

	utm_source=getCookie('utm_source');
        if(utm_source != "") {
		utm_medium=getCookie('utm_medium');
		utm_term=getCookie('utm_term');
		utm_content=getCookie('utm_content');
		utm_campaign=getCookie('utm_campaign');
		newurl += "?utm_source=" + utm_campaign + 
			"&utm_medium=" + utm_medium + 
			"&utm_term=" + utm_term +
			"&utm_content=" + utm_content +
			"&utm_campaign=" + utm_campaign;
        } 

	window.location.href = newurl;
}