I made a layout with divs, and css. I used tables for some things like displaying some data. When the browser is resized, and I shrink the box the layout messes up. The boxes move etc. How can I fix this?

Do you have a link to the page so we can see what it is doing?

http://phpwg.com/seropets/

Removing "Float: left" from the CSS for the #content div - fixes it for me when testing with firebug.