Scroll wheel and tab bar in Firefox!

I know it is the second day in a row that I post a tip about Firefox, but I just discovered it and I think it is really awesome compared to how Safari handles tabs. In Safari, if you have more tabs open than how wide your Safari window is, an arrow with a dropdown menu will appear. In Firefox 3, an arrow also appears and it lets you move left to right in the tab bar, but there is a quicker way. If you have a mighty mouse, a recent trackpad on a laptop or any mouse that lets you scroll horizontally, you can move through the tab bar when it has too many tabs open just by scrolling. Your mouse simply has to be on top of the tab bar.