Add pop-up call-me and login forms on the site with css

I would like to add two functionalities to my current simple html header that looks like this: [login to view URL] To Do: add Call Me and Client Login links so will look like this: [login to view URL] Action that occurs when user clicks on the links: 1) When user clicks on Client Login a window with the username/password form should slide out, as is done on this web site: [login to view URL] , action happens when you click on Login link. 2) Add the same form from the site: [login to view URL] that shows up when user clicks on Call Me link. Should look the same and come out with same effect.