a.about {
	display: block;
	width: 170px;
	height: 35px;
	background: url(../img/menu_about.gif) no-repeat;
	border: none;
	text-decoration: none;


} 

a.about:hover {
	background-position: -170px 0;
	border: none;
	text-decoration: none;

}
a.how {
	display: block;
	width: 170px;
	height: 35px;
	background: url(../img/menu_how.gif) no-repeat;
	border: none;
	text-decoration: none;

} 

a.how:hover {
	background-position: -170px 0;
	border: none;
	text-decoration: none;

}
a.visit {
	display: block;
	width: 170px;
	height: 35px;
	background: url(../img/menu_visit.gif) no-repeat;
	border: none;
	text-decoration: none;

} 

a.visit:hover {
	background-position: -170px 0;
	border: none;
	text-decoration: none;

}