Flickering

I tried to use AW in a left floated div element with padding and margin.
While a header cell gets an mouseover the hole table starts "flickering": the table is moved for a very short moment to an other position while moving the mouse of the header cells.

any ideas?
Shall I set up a demo page to show the problem?

So far I can see it has to do with the position: relative; of .active-controls-grid.

After I created a dummy div widh position:absolute, around the grid itself.
It seems to work - also that feels a bit like a quick hack. :-)

Any other ideas?

I also had to modify width and height in

.active-controls-grid {
position: relative; /* this makes absolute positioning work in NS */
overflow: hidden;
width: 500px;
height: 500px;

:)