in the theme file..

would it be possible to put the header section.. basically mine is just 2 images

left 1 and a right background tiled image where the banner goes over..

i would like this top section to use a frame, so that when people click a link etc, only the content below the header.. the left/center/right blocks will change etc as normal but the header logo and banner part stay on the screen and don't have to be reloaded every time..

how can i go about this?

also it has to allow for the fact that some people may not be able to use frames so it shud detect the browser and determine whether to use a frame or not..