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

How to make bevel and Embosed effect to Submit button in CSS 3 ?

Like this.

Enlarged Image

I'm only cons开发者_如何转开发idering Web-kit based browsers. and I'm not asking about How to give round corner and how to give gradient to button, I'm only asking about bevel effect

Html

<input type="submit" value="Submit your entry" class="input" />

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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/