How to make bevel and Embosed effect to button in CSS 3 for web-kit based browsers?

This is possible without the use of extra mark-up through the use of multiple box-shadows:

box-shadow: 
  0 1px 2px #fff, /*bottom external highlight*/
  0 -1px 1px #666, /*top external shadow*/ 
  inset 0 -1px 1px rgba(0,0,0,0.5), /*bottom internal shadow*/ 
  inset 0 1px 1px rgba(255,255,255,0.8); /*top internal highlight*/

http://jsfiddle.net/NPXfe/