How do you create a toggle button?

Question

I want to create a toggle button in html using css. I want it so that when you click on it , it stays pushed in and than when you click it on it again it pops out.

Answer 1

As far as I was searching for answer too, and wanted to acomplish it with CSS. I found solution by CSS NINJA It is a nice impelmentation of and some css Live demo! Although it is not working in IE 8 you could implement selectivizr! and fix CSS where uses opacity to filter to make it work in IE.

EDIT 2014:

for new toggle buttons I do use solution found on Lea Verou blog visually similar to iOS checkbox