modal-dialog or div overlay over frameset?

I have a html page with several frames in it (also nes开发者_开发技巧ted framesets). I want to show an overlay over all these frames to show a modal box / light box. Is that possible?

I know, i know, framesets are not good to use, but I want to give it a try!

a modal dialog example

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Unfortunately completely impossible.

The only HTML Element that will overlay over a frameset frame.. is the drop down list portion of a Select list.

In a similar situation, I built the same "frameset" using iframes. It was the only way to overlay over the frames.