Window Load Incompletion?

I have a grid, with a context menu option that opens a window. When testing using IE, I noted that every other time the window is opened, consistently, the IE page load progress bar never comes to completion (see image below). Here’s the invocation code (_dhxWins is previously created dhtmlxWindows object):

with (_dhxWins) {
    winId = 'dlgEdit';
    with (createWindow(winId, 50, 70, 570, 200))
        {
            setModal(true);
            setText('Test Window');
            denyPark();
            setMinDimension(570,200);
            button("park").hide();
            attachURL('testpage.php?winId=' + winId);
        }
}

and here’s the window HTML

[code]

TEST CONTENT [/code] IE page load progress bar, which never ends on every other window invocation, is highlighted below.


(reply only added so I can select “notify me” checkbox)

We’ve managed to recreate the problem locally.

But we can not solve it. As this behaviour depends on browser and can not be controlled by the component. The component loads all correctly.