Shoutbox

Ok I’m working on my new site and I want to make it so when I click a link it opens in the middle table on the site between the 2 side menus (one on left one on right).

So I used the PHP include to do this. It works fine but the only problem is that when a link is click it (in the middle table or one of the menus) it refreshes the whole page which I don't want it to do. I have a music player at the top right of the site and when the page refreshes the music player refreshes also and stops playing the song. All's I want is the middle to change to the new page and the rest (mainly the header) to not refresh.

Example at: http://www.beachassaultstudios.com/mrn/new/site.php 
*Note: Music player only shows in IE

What would I use? iFrame won't work because it does not resize when the page is resized and I don't know if my server will run shtml and is shtml will work any better.

Would a frame set work?