body{
	background: white;
}
#contenido{
	position: absolute;
   left: 50%;
   top: 50%;
   margin-left: -362px;
   margin-top: -260px;
	}
	
a img{
	border:none;
	}

a:link:hover img, a:visited:hover img{
	background: #cce5ff;
	}