I am trying to mimic the way google image search results are displayed for a thumbnail gallery in a wordpress blog

I am using the nextGEN gallery plugin for the backend and Shadowbox to show the fullscreen image when the thumbs are clicked on but I am trying to get the thumbs(and their titles) to stay centered within the browser window and yet wrap when the browser window is resized - in other words, I'm trying to create a horizontal percentage float value between each thumbnail border

It looks like Google's code uses a combination of tables and divs but I can't figure out exactly how it does it (I'm not the greatest coder!) and am hoping the code exists somewhere as a plugin so that I can use it with nextGEN and Shadowbox
I hope this all makes sense and greatly appreciate any suggestions