input[type='submit'] {
	background-color: transparent;
	border: none;
	background-image: url('../images/valider1.png');
	width: 53px;
	height: 34px;
	cursor: pointer;
}
input[type='submit']:hover {
	background-color: transparent;
	border: none;
	background-image: url('../images/valider2.png');
	width: 53px;
	height: 34px;
	cursor: pointer;
}