JavaScript to test whether or not cookies are enabled

ThirdPartyListing6_1.js

function testCanWriteCookies() {
        document.cookie = 'test=1';
        var allCookies = document.cookie.replace(' ', '').split(';');
        for (var i = 0; i < allCookies.length; i++) {
            //var index = allCookies[i].indexOf('test=1');
            //alert('index=' + index);
            if (allCookies[i] == "test=1") {
                return true;
            }
        }
        return false;
    }