Creating Bulletproof Graphic Link Buttons With CSS
http://www.456bereastreet.com/archive/200705/creating_bulletproof_graphic_link_buttons_with_css/

Johansson, Roger
456 Berea Street
2007

Abstract:

A CSS problem I have been wrestling with lately is how to create a bulletproof shrinkwrapping graphic button. By that I mean an image-based button that will expand and contract to fit the amount of text it contains. It is a very useful technique for CMS-driven sites that allow the client to change the text that is displayed on buttons, as well as for multilingual sites.