// Set the cookie.
// SetCookie('your_cookie_name', 'your_cookie_value', exp);

// Get the cookie.
// var someVariable = GetCookie('your_cookie_name');


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) {	// expireDate, path, domain, secure
	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" : "");
}