#cajamenu
{
	position:relative;
	height: 20px;
	width: 710px;
	font-family:  Helvetica,Arial, Helvetica, sans-serif;
	top: 10px;
	left: 0px;
	border-bottom: solid 1px black;
	background-color: #FFFFFF;
}
#cajahoja
{
	position: absolute;
	top: 30px; left: 10px;
	background-color: white;
	height: 100%; width: 100%;
	border-left: solid 1px black;
}
ul#menuh {
	list-style:none;
	margin-left: 30px;
	margin-top: 0px;
	padding:0;
	z-index: 2;
	}
ul#menuh li {
	float:left;
	}
ul#menuh li a {
	display:block;
	width:150px;
	height: 15px;
	background-color:#CC0000;
	text-decoration:none;
	text-align:center;
	padding-top: 3px;
	font-size:10px;
	color:#FFFFFF;
	border-top: solid 1px black;
	border-right: solid 1px black;
	border-left: solid 1px black;
	background-image: url(Imagenes/fondo_tab.jpg);
	}
ul#menuh li a:hover {
	background-color:#660000;
	color: white;
	background-image: url(Imagenes/fondo_tabB.jpg);
	}

ul#menuh li a.activo{
	display:block;
	width:150px;
	height: 15px;
	background-color:white;
	text-decoration:none;
	font-weight: bold;
	text-align:center;
	padding-top: 3px;
	font-size:10px;
	color:black;
	border-top: solid 1px black;
	border-right: solid 1px black;
	border-left: solid 1px black;
	margin-top: 2px;
	background-image: url(Imagenes/fondo_tab_blanc.jpg);
	}
#contenido1, #contenido2, #contenido3, #contenido4{
	clear:left;
	font-family:Arial, helvetica, sans-serif;
	font-size:11px;
	line-height:16px;
	text-align:justify;
	border:solid #CCCCCC 1px;
	width:700px;
	padding:5px;
	background-color: #FFFFFF;
	position: relative;
	top: 10px;
	height: 100%;
}
#contenido1, #contenido2, #contenido3, #contenido4{
    clear:left;
}