Joe Song

So, we had this issue when were were using slideToggle (and it would apply to slideDown) where the Flash movie contained inside the element we were animating would flicker once the animation is complete.

What’s happening: While animating, jQuery needs to add a few style definitions if they are not already declared. Among these is the ‘overflow’ property. jQuery sets this to ‘hidden’ in order to show the animation and then removes this declaration upon completion of the animation. When the declaration is removed, Flash gets the signal to re-render the movie (because, possibly, the layout of the page has changed).

How to fix it: declare ‘overflow:hidden’ in the CSS for the element. Voilá, the flickering is gone.