Target Link

Hi there I have my page up and it is coming along slowly. I have run into a problem. I have a right hand css window with thumb nails in it. I want to be able to click on the thumb nails and have them open in a diffrent css block on the page.

I though the best way to do this would be to use a target tag in the link, but do not know how or if you can target a link to open in another css block on the same page.

Is this possible and if so could some one help me with it?

the page that I am doing this on is www.skeates.net/photos.html

Thanks.