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 setCookie(c_name,value,expiredays)

{

	var exdate=new Date();

	exdate.setDate(exdate.getDay()+expiredays);

	document.cookie=c_name+ "=" +escape(value)+

	((expiredays==null) ? "" : ";expires="+exdate.toUTCString());

}







function deleteCookie(name) 

{

	  if (getCookie(name))

	  {

		document.cookie = name + "=" +

		"; expires=Thu, 01-Jan-70 00:00:01 GMT";

	  }



}



  



function checkCookie()

{

	var ex_referral=getCookie('referral');

	var referral="";

	var url=window.location.href;

	var start_pos=url.indexOf("referral=");

	if(start_pos>0)

	{

		start_pos+="referral=".length;

		var end_pos=url.indexOf("&",start_pos);//alert(start_pos+" "+end_pos);

		if(end_pos==-1)

		{

			end_pos=url.length;

		}

		referral=url.substr(start_pos,end_pos-start_pos);///alert(referral);

	}



	if (referral!="")

	{

		  if(ex_referral!=referral)

		  {

		  	  setCookie('referral',referral,26);

		  }

		  else

		  {

			 setCookie('referral',referral,26);

		  }

	}

}



function setReferral(id)

{

	var referral=getCookie('referral');

	for (var i = 0; i < document.links.length; i++)

	{

		var e = document.links[i];

		if (e.href.indexOf("ShoppingCart.asp?ProductCode=")>0)

		{

			e.href += "&click="+referral;///alert(e.href);

		}

	}

}