(function (w, d) {
function trigger()
{
var iframe = d.querySelector("iframe");
if (!iframe) return;
iframe.addEventListener("load", function () {
alert(iframe.contentWindow.document.location);
});
}
if (/^(interactive|complete)$/i.test(d.readyState)) {
trigger();
} else {
d.addEventListener('DOMContentLoaded', trigger);
}
})(window, document);