I was recently going through my "Menu" collection and came across this drop down list, which I love, for sites that require a simple drop down system. Obviously with a little CSS know how you can change up the look of the menu, but it is pretty elegant right out of the box. And it degrades nicely when certain options aren't supported by specific browsers.
Changing the default options are a breeze and you can create some pretty nice "looks" with some simple tweeks.
Check it out Codrops
