Installing a multi level CSS dropdown menu

I’ve had a few requests from readers asking how to install a dropdown menu. So here it is, a multi level dropdown/flyout menu. The original code is from CSSPlay. I modified the CSS part a little to adapt to Blogger template. This four level dropdown/flyout menu should work in most browsers. A tab with small caps indicates it has upper level/levels. A dropdown/flyout will appear when you hover the