I want to have hyperlinks open in a new window, but only to the size of the content inside (ie an image). I know there's gotta be an easy way to do it, I just can't seem to find it. I've tried multiple javascript scripts on the subject, but none seem to work right. Is there just a simple html or css script i can add to the <a href=""> ??

<a href="javascript:window.open('http://g-arcade.com','','600,800');">online games</a>

There you go.

I think my problem may be because I have the table of hyperlinks in a javascript jar with document.write making the table. But when I try to add any javascript functions to the a href tag, the whole table disappears from the page. Is it possible to have functions in a document.write jar?

You might want to try something like LightBox instead:
http://ahavriluk.home.comcast.net/lightboxEx/doc/