Need your help Friends,
I have a page with multiple frames. The layout of the frames in the page is as below:

---------------------
F1
---------------------
.....................
F4 ¦ F5
.....................
---------------------
F3
---------------------

The frame F1 is at the top of the page. The second frame F2 further contains two inner frames - F4 and F5. The frame F3 is at the bottom of the page.

Here is what I need to do. I need to put a javascript dropdown menu in the frame F1. The menu items should fall on the frames F4 and F5 as if there is no frameset in the page. I tried with javascript for the menus which doesn't fall on the lower frames whereas it goes inside the same frame where the menu is laid.

Note : Frame height for each frame is fixed.

Is there a way to do the same. Or can we do using layers?