passing variable question

Hello all, I have a php script that reads all the files in a directory (pictures), the outputs each picture as a link to be displayed in the main frame of the html page. All of that works fine. I want to be able to "pretty up" the picture out put by placing the picture into a html table so it is centered, add color, etc. But I cannot seem to figure out how to pass the variable from the menu page to the main frame page without using a goofy gray button form. Anyone know how to pass a variable on just a link alone? Thanks, Ronnie