.menu_superior{
	width:985px;
	height:31px;
	margin-top:20px;
}

.menu_superior ul{
	list-style:none;
	padding:0px;
	margin:0px;
	background-image:url(../img/menu/zona_int_barra.jpg);
	background-repeat:repeat-x;
	height:31px;
}
.menu_superior ul li{
	/*
	display:table-cell;
    vertical-align: top; /* BASELINE CORRECCIÓN
    zoom: 1; /* IE7 (hasLayout)
    *display: inline; /* IE 
    _height: 31px; /* IE6 */
	padding:0px;
	float:left;
	
}
.izquierda_menu{
	background-image:url(../img/menu/extremo_iz_barra.jpg);
	background-repeat:no-repeat;
	width:27px;
	height:31px;
}
.derecha_menu{
	background-image:url(../img/menu/extremo_der_barra.jpg);
	background-position:right;
	width:7px;
	height:31px;
}
a#btninicio{
	display:block;
	background-image:url(../img/menu/inicio_btn.png);
	background-position:bottom;
	width:40px;
	height:31px;
}
a#btninicio:hover{
	background-position:center;
}
a#btnempresa{
	display:block;
	background-image:url(../img/menu/empresa_btn.png);
	background-position:bottom;
	width:57px;
	height:31px;
	background-position:bottom;
}
a#btnempresa:hover{
	background-position:center;
}

a#btnareas{
	display:block;
	background-image:url(../img/menu/areas_trabajo_btn.png);
	width:101px;
	height:31px;
	background-position:bottom;
}
a#btnareas:hover{
	background-position:center;
}
a#btnrecursos{
	display:block;
	background-image:url(../img/menu/recursos_humanos_btn.png);
	width:117px;
	height:31px;
	background-position:bottom;
}
a#btnrecursos:hover{
	background-position:center;
}
a#btnproyectos{
	display:block;
	background-image:url(../img/menu/politicas_calidad_pre_medioam_btn.png);
	width:263px;
	height:31px;
	background-position:bottom;
}
a#btnproyectos:hover{
	background-position:center;
}
a#btnnoticias{
	display:block;
	background-image:url(../img/menu/noticias.png);
	width:57px;
	height:31px;
	background-position:bottom;
}
a#btnnoticias:hover{
	background-position:center;
}


a#btnoficinas{
	display:block;
	background-image:url(../img/menu/localizacion.png);
	width:77px;
	height:31px;
	background-position:bottom;
}
a#btnoficinas:hover{
	background-position:center;
}
.buscador{
	width:209px;
	padding-left:30px;
}
.buscador input[type=text]{
	border:1px solid #898989;
	position:relative;
	top:6px;
	
}
.buscador input[type=submit]{
	background:none;
	outline:none;
	border:none;
	background-image:url(../img/menu/buscar_btn.png);
	width:17px;
	height:14px;
	position:relative;
	left:5px;
	top:7px;
	*top:4px;
}