Flash content displays on top of all DHTML layers

(TechNote – update) A Flash movie in a layer on a DHTML page containing several layers may display above all the layers, regardless of the stacking order (“z-index”) of those layers.

By default, browsers place embedded plug-in content, such as a Flash movie or Java applet, on the topmost layer. In older browsers attempts to place a DHTML layer on top of a Flash layer would fail. Newer browsers add the ability to layer Flash content with DHTML content and in some cases the ability to use transparent backgrounds in the Flash content.