function writecookie(key,val,doc)
{
	var expires = new Date();
	expires.setTime (expires.getTime() + 24*60*60*365*1000);
	doc.cookie=key+'='+val+';expires='+expires.toGMTString();
}

	function CookieVegLeolvaso(offset)
	{  
		var endstr = document.cookie.indexOf (";", offset);  
		if (endstr == -1)  
		endstr = document.cookie.length;  
		return unescape(document.cookie.substring(offset, endstr));
	}  
	
	function CookieBeolvasas (nev)
	{  
		var arg = nev + "=";  
		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 CookieVegLeolvaso(j);  
			i = document.cookie.indexOf(" ", i) + 1;  
			if (i == 0) break;
		}  
		
		return null;
	}