Interesting solution, but the number of sites using fixed menus (or ones that fix once you've scrolled a certain amount) may make it risky to use for your avera

Interesting solution, but the number of sites using fixed menus (or ones that fix once you've scrolled a certain amount) may make it risky to use for your average user. And quite a few sites with fixed menus are also probably the ones the user will most likely want to use this script on due to the annoying fixed ads and nagbars...