IE9 not refreshing when Ajax request returns

[Frinavale]

I have a JavaScript class that displays a partially-opaque div over top of the content of another div when an Ajax request is sent to the server.

When the request returns, the JavaScript class hides the partially-opaque div....it works...sort of.

Right now, in IE9, when the Ajax request is complete, the partial-opacity is only hidden if the user moves their mouse.

So, my question is, how do I force the browser to do what it's supposed to do?

This is my extremely simple function that is called after the request returns to the browser:

    _hideBlockingDiv: function() {
        if (this.get_blockingDivClientID()) {
            var blockingElement = $get(this.get_blockingDivClientID());
 
            if (blockingElement != null) {
                blockingElement.style.display = 'none';
            }
            //if I add the alert then everything works fine in IE9
            //if I don't then the page will remain the same until the user moves their mose
            //alert("done");
        }
    }

Thanks

-Frinny

[Dormilich]

not sure if it helps in this case, but sometimes setting a little timeout solves such issues.

[Frinavale]

I uninstalled IE9.
Installed Windows Service Pack 1....
I'm going to try installing IE9 again in a week or so and try again.