Cookie-set,get,delete in JQuery Functions

// JQuery Functions

function setCookie(cname, cvalue, exdays) {

var d = new Date();

d.setTime(d.getTime() + (exdays * 24 * 60 * 60 * 1000));

var expires = "expires=" + d.toGMTString();

document.cookie = cname + "=" + cvalue + ";" + expires + ";path=/";

}

function getCookie(cookieName) {

var cookieValue = document.cookie;

var cookieStart = cookieValue.indexOf(" " + cookieName + "=");

if (cookieStart == -1) {

cookieStart = cookieValue.indexOf("=");

}

if (cookieStart == -1) {

cookieValue = null;

} else {

cookieStart = cookieValue.indexOf("=", cookieStart) + 1;

var cookieEnd = cookieValue.indexOf(";", cookieStart);

if (cookieEnd == -1) {

cookieEnd = cookieValue.length;

}

cookieValue = unescape(cookieValue.substring(cookieStart, cookieEnd));

}

return cookieValue;

}

function delete_cookie(name) {

document.cookie = name + '=; expires=Thu, 01 Jan 1970 00:00:01 GMT;';

}