[jQuery] [tooltip] Fade on IE

[apuredol]

Hi, I am using and modifying the sample demo page and have a error on
IE:

Using:

$(function() {
        $('#pretty').tooltip({
                track: true,
                delay: 0,
                fade: 500,
                showURL: false,
                showBody: " - ",
                extraClass: "pretty",
                fixPNG: true,
                left: 120
        });
});

The fade effect on IE causes that the image shadow.png appears black
on border for a while, fade effect is too uggly, firefox and safari
works fine. Now I have to set fade=0 only to support IE7.

Is there a way to use it?

Thanks.