.body{
	background-attachment: fixed;
	background-color: #C0C0C0;
	background-image: url(images/fondo.jpg);
	background-repeat: repeat-x;
	background-position: center top;
}
#relativa{position: relative; top:0px; left: 0px;}
#lineaDerecha{position: absolute; top:-72px; visibility:hidden;}
#lineaIzquierda{position: absolute; top:216px; visibility:hidden;}
td.lineas{ width: 50%; vertical-align: middle;}