<script>
    var iframe = document.createElement('iframe');
    iframe.frameBorder = 1;
    iframe.width = "500px";
    iframe.height = "250px";
    iframe.id = "1234";
    iframe.onload = function()
    {
        var doc = iframe.contentDocument || iframe.contentWindow.document;
        var s = doc.createElement('script');
        s.src = "http://127.0.0.1:8080/testdialog2/testdialog2/testdialog2.nocache.js";
        doc.body.appendChild(s);
    };
    document.body.appendChild(iframe);
    // Create IE + others compatible event handler
    var eventMethod = window.addEventListener ? "addEventListener"
            : "attachEvent";
    var eventer = window[eventMethod];
    var messageEvent = eventMethod == "attachEvent" ? "onmessage"
            : "message";

    // Listen to message from child window
    eventer(messageEvent, function(e) {
    //            if ( e.origin !== "http://127.0.0.1:8080/" )
    //                    return
    console.log('parent received message!:  ', e.data,
            ' from origin:  ' + e.origin);
}, false);
</script>