PHP Link Question

How do I change the image of the submit button so it appears as text?

The objective is to display a list of article titles and that the titles act
like submit buttons. The idea is that when the title is selected that the
full article will appear elsewhere on the page.

Since this is a dynamic site (where the articles change on a regular basis)
and the titles are stored in MySQL it is important that when the user clicks
on the title that the articles' ID number variable also be transferred.

I'd prefer to remain within PHP than to use javascript for this action.

All ideas and suggestions appreciated.

Richard