Frames and a sliding-in JS Menue

[Gorbi]

Hello.
My Problem is the following:
I've made a site with 3 Frames (Banner, Navigation, Main) and in the NAvi-Frame there is a Menue that slides in per JavaScript whenever the Mouse moves over it.
Now I have to set the width of the Navigation-Frame to the pixels the Menue is... but that's lost space for the width of the Main-Frame.
How can I manage the Navi-Menue to slide over the Main-Frame? Currently it slides "under" it... it's covered by the Main-Frame actually.
Can anyone help me with that?

[beetle]

Well, the menu acutally doesn't slide 'under' the main frame, but rather, reaches the boundaries of the frame it is in (I'm assuming left)

I've seen very few menuing systems that work across frames...and to be honest, do not know how they accomplish it...

[Mr J]

You cannot slide over a frame because in reality your menu is in a different page, like Beetle says, you have reached the boundary of that page.
The only thing you can do is adjust the size of your frame, or menu, to suit.