FireBug ScreenShot

FireBug Screen Shot

But I did not get the alert though I have used the following code

Javascript used in this page

    <script type="text/javascript">
        $(document).ready(function() {
            var url = "ticker.js?callback=?";
            $.getJSON(url, function(data) {

And remote file ticker.js file only contains

Without using "callback?" it works in Firefox and IE. I did not try it in any other browser. If you would like to see the demo you can visit here callback? ..X