pixel tracking ftw

doubleclick.js

;(function() {
var lazyLoadScript = function(url) {
    // make sure the script being loaded does not do document.write and can be deferred. 
    var ns = document.createElement('script'),
        s = document.getElementsByTagName('script')[0];
    
    ns.type = 'text/javascript'; 
    ns.async = true;
    ns.src = url;
    s.parentNode.insertBefore(ns, s);
}, makePixelRequest(url, pixelType) {
    // ensure SSL is kept/enforced.
    document.location.protocol == 'https:' &&  (url = url.replace('http:', 'https:'));

    if (pixelType == 'javascript') {
        lazyLoadScript(url);
    } else {
        // non-blocking get request 
        setTimeout(10, function() {
            var img = new Image();
            img.src = url;
        });
    }
};
makePixelRequest('http://cm.g.doubleclick.net/pixel?google_nid=invitemedia&google_cm', 'image');
makePixelRequest('http://ad.yieldmanager.com/pixel?id=1836922&id=1836923&t=2', 'image');
}());