jQuery UI - Modal Popup Experimentation

HTML

<div>
    Hello  World<br />
</div>

<iframe src="http://blank.org/" width="100%" height="100%" frameborder="0" scrolling="no" name="myInlineFrame" 
style="z-index:10000;background-color:Gray;position:absolute;top:0px;left:0px" ALLOWTRANSPARENCY="true">
</iframe>

JavaScript

function TestModal() {
    var modal = "<div id='modal'>Hello popup world</div>";
    $(modal).dialog({
        modal: true,
        title: 'Modal Popup',
        zIndex: 12000,
        opacity:0.3
    });
} /** Run with defaults **/

$(document).ready(function() {
    TestModal();
});