[ic] menu fly-out dhtml bug IE

[Luc]

Hello,

I use the product_flyout and the product_tree templates (IC version: 4.9.3)
for a 3 level (dhtml) menu.

Problem : When I open the menu in Internet Explorer and I scroll down
and up (all with the wheel of my mouse) the fly-outs of the menu are not 
shown at the right level, but somewhere else on the page.

For example : http://217.170.36.43/foundation/

Is there anyone who can tell me how to solve this problem ?
(please do not tell me not use dhtml) 

Luc