Facebook Button CSS trick

Does anyone here know how to style a normal button like the famous开发者_如何学C Facebook button? i have already developed the code, but i need to see whether the experts here do know how to do this or not. Post in your codes if you can do Style a normal button like facebook button.

UPDATE

I did not post this question myself. I guess someone else used my profile by some means to do this. Sorry for the disturbance created by this question. I myself want the moderators to delete this. PLEASE.

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You can make any button look the way you want using an image:

.button {
   background-image:url(yourimage.png);
   width:...px;
   height:...px;
   border:none;
}