.ui-tabs-nav a {
   	background: url(../images/buttons_black/dots.png) no-repeat center top;
}

.ui-tabs-nav a:hover {
	background: url(../images/buttons_black/dots.png) no-repeat center -8px;
}

.ui-tabs-nav .ui-tabs-selected a {
	background: url(../images/buttons_black/dots.png) no-repeat center -16px;
}