function getCookie(NameOfCookie){
	// First we check to see if there is a cookie stored.
	// Otherwise the length of document.cookie would be zero.
	if (document.cookie.length > 0){ 
		// Second we check to see if the cookie's name is stored in the
		// "document.cookie" object for the page.
		// Since more than one cookie can be set on a
		// single page it is possible that our cookie
		// is not present, even though the "document.cookie" object
		// is not just an empty text.
		// If our cookie name is not present the value -1 is stored
		// in the variable called "begin".
		begin = document.cookie.indexOf(NameOfCookie+"="); 
		if (begin != -1){ 
			// Our cookie was set. 
			// The value stored in the cookie is returned from the function.
			begin += NameOfCookie.length+1; 
			end = document.cookie.indexOf(";", begin);
			if (end == -1) end = document.cookie.length;
			return unescape(document.cookie.substring(begin, end));
		} 
	}
	return null; 
	// Our cookie was not set. 
	// The value "null" is returned from the function.
	
}

function setCookie(NameOfCookie, value, expiredays){
	// Three variables are used to set the new cookie. 
	// The name of the cookie, the value to be stored,
	// and finally the number of days until the cookie expires.
	// The first lines in the function convert 
	// the number of days to a valid date.
	var ExpireDate = new Date ();
	ExpireDate.setTime(ExpireDate.getTime() + (expiredays * 24 * 3600 * 1000));
	// The next line stores the cookie, simply by assigning 
	// the values to the "document.cookie" object.
	// Note the date is converted to Greenwich Mean time using
	// the "toGMTstring()" function.
	document.cookie = NameOfCookie + "=" + escape(value) + ((expiredays == null) ? "" : "; expires=" + ExpireDate.toGMTString());
}

function delCookie (NameOfCookie){
	// The function simply checks to see if the cookie is set.
	// If so, the expiration date is set to Jan. 1st 1970.
	if (getCookie(NameOfCookie)){
		document.cookie = NameOfCookie + "=" + "; expires=Thu, 01-Jan-70 00:00:01 GMT";
	}
}

if(( document.referrer==null || document.referrer=='')&&(getCookie('referrer')==null)){
	//Here there is no referrer AND the referrer cookie is not so we set the cookie to "none"
	setCookie('referrer','none');
}else{
	//Here there is a referrer so we check to see if the referrer cookie is already set...
	c=getCookie('referrer');
	if(c==null || c==''){
		//Here there is a referrer and the cookie has not been previously set so we set it.
		setCookie('referrer',document.referrer);
	}
}