body{
	background-position:center middle;
	background-repeat:no-repeat;
	background-color:#000;
	}
	#logo{
		position:absolute;
		left:50%;
		top:50%;
		width:563px;
		height:237px;
		margin-left:-282px;
		margin-top:-118px;
		
	}
	.cabecera{
		background-repeat:no-repeat;
		background-position:top;
		height:500px;
		width:980px;
	}
	.contenedor{
		height:120px;
		width:920px;
		position:absolute;
		top:25%;
		left:50%;
		margin-left:-460px;
		text-align:center;
	}
	.fondoboton{
		background:url(../../imagenes/home/botonera.png) no-repeat 0 0;
		height:120px;
		width:920px;
		position:relative;
		padding-top:30px;
	}
	.fondoboton ul{ width:700px; height:120px; margin:0 auto; padding:0;}
	.fondoboton ul li{
		list-style:none;
		float:left;
		color:#FFF;
	}
	.btn_home{
		background: url(../../imagenes/home/home.png) no-repeat 0 1px;
	}
	.btn_portafolio{
		background: url(../../imagenes/home/portafolio.png) no-repeat 0 bottom;
	}
	.btn_servicios{
		background: url(../../imagenes/home/servicios.png) no-repeat 0 bottom;
	}
	.btn_contactenos{
		background: url(../../imagenes/home/contactenos.png) no-repeat 0 bottom;
	}
	.btn_herramientas{
		background: url(../../imagenes/home/herramientas.png) no-repeat 0 bottom;
	}
	.btn_herramientas, .btn_home, .btn_portafolio, .btn_servicios, .btn_contactenos {
		width:120px;
		height:34px;
		margin:0px 10px;
	}
	.btn_herramientas:hover, .btn_home:hover, .btn_portafolio:hover, .btn_servicios:hover, .btn_contactenos:hover {	
	background-position:0 1px;
	}