.button{
	background-image: url(http://www.dancemania.kiev.ua/images/calendar_but_over.gif);
	background-repeat: no-repeat;
	height: 39px;
	width: 160px;
}
.button a{
	background-image: url(http://www.dancemania.kiev.ua/images/calendar_but.gif);
	background-repeat: no-repeat;
	height: 39px;
	width: 160px;
	display: block;
}
.button  a:hover{
	background: none;
}