...when somebody clicks on the link.
How do I do that. I want the other oage to open on the bottom.

you mean like a new window? or a frame? the new window, just add this to the link:

<a href="URL.htm" target="_blank"> LINK NAME </a>

...when somebody clicks on the link.
How do I do that. I want the other oage to open on the bottom.

I think you might be talking about frames? You click a link at the top and it'll open at the bottom of the page?
Try lookin at this page: http://www.lissaexplains.com/frames.shtml#frameset
The code for a top frame should be there.

Actually it wasn't there.

I know how to use iframes by the way.

You have an example of what you want to do then?

If it's not iframes, can you explain a little more as to what you want? Or provide an example site, maybe?

Unfortuantely, I can't find one.
To make the things clearer, I want the page to get longer when they click on the link.

PHP can do the trick!
http://www.lissaexplains.com/forum/showthread.php?t=73809