Gestione Cookie Javascript

cookie.js

function readCookie(name) {
	if (document.cookie.length <= 0)
		return "";
	var str = document.cookie.indexOf(name + "=");
	if (str == -1)
		return "";
	str = str + name.length + 1;
	var end = document.cookie.indexOf(";", str);
	if (end == -1)
		end = document.cookie.length;
	return unescape(document.cookie.substring(str, end));
}
function writeCookie(name, value, expire) {
	var expires = new Date();
	var now = new Date();
	expires.setTime(now.getTime() + (parseInt(expire) * 60000));
	document.cookie = name + '=' + escape(value) + '; expires=' + expires.toGMTString() + '; path=/';
	return true;
}
function deleteCookie(name) {
	writeCookie(name, '', -1);
	return true;
}
function checkCookie(name) {
	return (document.cookie.indexOf(name) != -1) ? true : false;
}
function checkBrowserCookie() {
	document.cookie = 'check_cookie';
	var testcookie = (document.cookie.indexOf('check_cookie') != -1) ? true : false;
	return testcookie;
}

jsfiddle
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