.submit {
	display: inline;
	margin: 0; padding: 0; border:0;
	background: none; color: #000;
	font-size: 1em; font-family: inherit;
	cursor: pointer; cursor: hand;
}

http://forums.digitalpoint.com/showthread.php?t=403667

I made my own modifications to this.

Style a submit button to look like a link

forms

CSS