How would you implement this so that the tabs acsros the top touched, where the same width AND were always as wide as the content section underneath (which must remain, itself, fluid in width)? Since the content section is fluid, lets say 100% of the width of its container, you must make the tabs 100% width as well. Additionally you'd need some way of determining the required width of each tab so that, regardless of the number of tabs, it always took up that full 100%. Not sure of the mechanics of implementing something like this. Any ideas? How would you implement this so that the tabs acsros the top touched, where the same width AND were always as wide as the content section underneath (which must remain, itself, fluid in width)? Since the content section is fluid, lets say 100% of the width of its container, you must make the tabs 100% width as well. Additionally you'd need some way of determining the required width of each tab so that, regardless of the number of tabs, it always took up that full 100%. Not sure of the mechanics of implementing something like this. Any ideas?