Flash dissapears on menu rollover

My asp.net programmer and I are trying to figure out why the flash movie dissapears on our client website. Here is the link http://dev-turbo.virtual1.com/applications_gallery.aspx?movie=earthmover_gallery.swf

If you scroll over applications gallery menu item the flash dissappears. I thought it was something about the rollover actions themselves but I have discounted that because the flash playing on the home page isn’t effected by the rollovers http://dev-turbo.virtual1.com/default.aspx

So it is something unique to the code on the applications_gallery.aspx page or the underlying code?

Has anyone observed this behavior before?

It does not do this on FF 2.0 only IE.