.codigo {
	width: 510px;
	font-family: Verdana,sans-serif;
	font-size:11px;
	color:darkblue;
}
A.caja {
	width: 510px;
	font-family: Verdana,sans-serif;
	font-size:11px;
	border:3px;
	border-color:#999999;
	background-color: #888888;
	color:yellow;
	border-style: outset;
	padding:2px;
	text-decoration:none;
	font-weight:bold;
	text-align : center;
}

A.caja:hover  {
	width: 510px;
	font-family: Verdana,sans-serif;
	font-size:11px;
	border:3px;
	border-color:#999999;
	background-color: #888888;
	color:yellow;
	border-style: inset;
	padding:2px;
	text-decoration:none;
	font-weight:bold;
	position : relative;
	top:1px;
	left:1px;
	text-align : center;
}