function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

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


 	if (getQuerystring("utm_source") != "") {
	createCookie("utm_source", getQuerystring("utm_source") ,7);
	}
	if (getQuerystring("utm_medium") != "") {
	createCookie("utm_medium", getQuerystring("utm_medium") ,7);
	}
	if (getQuerystring("utm_content") != "") {
	createCookie("utm_content", getQuerystring("utm_content") ,7);
	}
	if (getQuerystring("utm_campaign") != "") {
	createCookie("utm_campaign", getQuerystring("utm_campaign") ,7);
	}