function getCookieVal (chaine)
	{ 
	var finchaine = document.cookie.indexOf (";", chaine);
	if (finchaine == -1) finchaine = document.cookie.length;
	return unescape(document.cookie.substring(chaine, finchaine)); 
	}
function GetCookie (name) 
	{ 
	var arg = name + "="; 
	var alen = arg.length; 
	var clen = document.cookie.length; 
	var i = 0; 
	while (i < clen) 
		{ 
		var j = i + alen; 
		if (document.cookie.substring(i, j) == arg) 
		return getCookieVal (j); 
		i = document.cookie.indexOf(" ", i) + 1; 
		if (i == 0) 
		break;
		}
	 return null;
	}
function SetCookie (name, value)
	{
	document.cookie = name + "=" + escape (value) 
	}