function getCookieVal (offset){
		var endstr = document.cookie.indexOf (";", offset);
		if (endstr == -1) {
			endstr = document.cookie.length;
		}
		return unescape(document.cookie.substring(offset, endstr));
	}


	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){
		var argv = SetCookie.arguments;
		var argc = SetCookie.arguments.length;
		var expires = (argc > 2) ? argv[2] : null;
		var path = (argc > 3) ? argv[3] : null;
		var domain = (argc > 4) ? argv[4] : null;
		var secure = (argc > 5) ? argv[5] : false;
		document.cookie = name + "=" + escape (value) +
        	((expires == null) ? "" : ("; expires=" + expires.toGMTString())) +
			((path == null) ? "" : ("; path=" + path)) +
			((domain == null) ? "" : ("; domain=" + domain)) +
			((secure == true) ? "; secure" : "");
	}



	function DeleteCookie (name) {
		var exp = new Date();
		exp.setTime (exp.getTime() - 1);
		var cval = GetCookie (name);
		document.cookie = name + "=" + cval + "; expires="+exp.toGMTString() + ";path=/";
	}