Popups for any website showing two buttons - login and signup, in first line normal state, and in second line they are hovered and content is rolled out below. first form is login with two inputs, checkbox, button and forgotten password link, second is for registration, simplier one with inputs and button. there are also two different color combos.
Check it out on tempees:
http://www.tempees.com/free-download/login-and-signup-popups