#header{
		height:80px;
		background: #5DC9E1 url(imagens/dr-net.gif) center center no-repeat; text-indent: -9000px;
		color:#fff;
		}	
		
p.ortodontista a { background:url(imagens/visitar-site-ortodontista.jpg) center bottom no-repeat; display: block; width: 800px; height: 68px; text-indent: -9000px;}	

#box2{
	position:absolute;
	width:750px;
	height:303px;
}
#box2 span{
	display:block;
	float:left;
		width:750px;
	height:303px;
}

#box2 span img { width: 750px; height: 303px;}


.mask2{
	position:relative;
	width:750px;
	height:303px;
	overflow:hidden;
}
span img{
	display:block;
	border:none;
}