.menu {
	height: 197px;
	width: 230px;
	margin:auto;
}
.menu ul {
	float: left;
	height: 197px;
	width: 230px;
	list-style-type: none;
}
.menu ul li {
	list-style-type: none;
	float:left;
}
.menu ul .b_inicio {
	float: left;
	height: 29px;
	width: 230px;
}
.menu ul .b_empresa {
	float: left;
	height: 28px;
	width: 230px;
}
.menu ul .b_catalogo {
	float: left;
	height: 28px;
	width: 230px;
}
.menu ul .b_calidad {
	float: left;
	height: 28px;
	width: 230px;
}
.menu ul .b_servicios {
	float: left;
	height: 28px;
	width: 230px;
}
.menu ul .b_trabajos{
	float: left;
	height: 28px;
	width: 230px;
}
.menu ul .b_contacto {
	float: left;
	height: 28px;
	width: 230px;
}
.menu ul .b_inicio a {
	float: left;
	height: 29px;
	width: 230px;
	background-image: url(images/botinicio.gif);
	background-repeat: no-repeat;
	background-position: 0px;
	text-indent: -2000px;
}
.menu ul .b_inicio a:hover, .menu ul .b_inicio a.s, .menu ul .b_inicio a.s:hover {
	float: left;
	height: 29px;
	width: 230px;
	background-image: url(images/botinicioa.gif);
	background-repeat: no-repeat;
	background-position: 0px;
	text-indent: -2000px;
}
.menu ul .b_empresa a {
	float: left;
	height: 28px;
	width: 230px;
	background-image: url(images/botempresa.gif);
	background-repeat: no-repeat;
	background-position: 0px;
	text-indent: -2000px;
}
.menu ul .b_empresa a:hover, .menu ul .b_empresa a.s, .menu ul .b_empresa a.s:hover {
	float: left;
	height: 28px;
	width: 230px;
	background-image: url(images/botempresaa.gif);
	background-repeat: no-repeat;
	background-position: 0px;
	text-indent: -2000px;
}
.menu ul .b_catalogo a {
	float: left;
	height: 28px;
	width: 230px;
	background-image: url(images/botcatalogo.gif);
	background-repeat: no-repeat;
	background-position: 0px;
	text-indent: -2000px;
}
.menu ul .b_catalogo a:hover, .menu ul .b_catalogo a.s, .menu ul .b_catalogo a.s:hover {
	float: left;
	height: 28px;
	width: 230px;
	background-image: url(images/botcatalogoa.gif);
	background-repeat: no-repeat;
	background-position: 0px;
	text-indent: -2000px;
}
.menu ul .b_calidad a {
	float: left;
	height: 28px;
	width: 230px;
	background-image: url(images/botcalidad.gif);
	background-repeat: no-repeat;
	background-position: 0px;
	text-indent: -2000px;
}
.menu ul .b_calidad a:hover, .menu ul .b_calidad a.s, .menu ul .b_calidad a.s:hover {
	float: left;
	height: 28px;
	width: 230px;
	background-image: url(images/botcalidada.gif);
	background-repeat: no-repeat;
	background-position: 0px;
	text-indent: -2000px;
}
.menu ul .b_servicios a {
	float: left;
	height: 28px;
	width: 230px;
	background-image: url(images/botservicios.gif);
	background-repeat: no-repeat;
	background-position: 0px;
	text-indent: -2000px;
}
.menu ul .b_servicios a:hover, .menu ul .b_servicios a.s, .menu ul .b_servicios a.s:hover {
	float: left;
	height: 28px;
	width: 230px;
	background-image: url(images/botserviciosa.gif);
	background-repeat: no-repeat;
	background-position: 0px;
	text-indent: -2000px;
}
.menu ul .b_trabajos a {
	float: left;
	height: 28px;
	width: 230px;
	background-image: url(images/bottrabajos.gif);
	background-repeat: no-repeat;
	background-position: 0px;
	text-indent: -2000px;
}
.menu ul .b_trabajos a:hover, .menu ul .b_trabajos a.s, .menu ul .b_trabajos a.s:hover {
	float: left;
	height: 28px;
	width: 230px;
	background-image: url(images/bottrabajosa.gif);
	background-repeat: no-repeat;
	background-position: 0px;
	text-indent: -2000px;
}
.menu ul .b_contacto a {
	float: left;
	height: 28px;
	width: 230px;
	background-image: url(images/botcontacto.gif);
	background-repeat: no-repeat;
	background-position: 0px;
	text-indent: -2000px;
}
.menu ul .b_contacto a:hover, .menu ul .b_contacto a.s, .menu ul .b_contacto a.s:hover {
	float: left;
	height: 28px;
	width: 230px;
	background-image: url(images/botcontactoa.gif);
	background-repeat: no-repeat;
	background-position: 0px;
	text-indent: -2000px;
}