cookie parser

gistfile1.js

function getCookie(cookie){
    var cookies = document.cookie.split(';');
    var theCookie;

    //loops through cookie finding the desired one
    for (var x = 0; x < cookies.length; x++){
        if (cookies[x].substring(0,cookies[x].indexOf('=')).indexOf(cookie) !== -1){
            theCookie = cookies[x];
            break;
        }
    }

    if (theCookie === undefined){
        return null;
    } else {
        return decodeURIComponent(theCookie.slice(theCookie.indexOf('=') + 1));
    }
}