body{margin:0px;padding:0px;background-color:#0157a4; color:#fff;}

a:link, a:visited {color:#99ccff;background:#0157a4; text-decoration:none; padding:3px 6px; margin:0 10px;  }
a:hover {color:#fff;}

  #centrado{
  font-family:  Arial, Helvetica, sans-serif;
	font-size: 14px;
  width:344px;
  display:block;
  margin:0px;
	padding:0px;
  text-align: centar;
  position: absolute;
  top: 50%;
  left: 50%;
  margin-left: -200px;
  margin-top: -245px;
  
  text-align:center;
	}
.left{float:left; margin-left:100px; text-align:center;   }
.left a{ height:45; width:150; display:block; background: #0157a4 url('new_img/hl1a.jpg') no-repeat top left;}
.left a:hover{ height:45; width:150; display:block; background: #0157a4 url('new_img/hl1b.jpg') no-repeat top left;}
.right{float:right; margin-right:100px; text-align:center;}
.right a{ height:45; width:150; display:block; background: #0157a4 url('new_img/hl2a.jpg') no-repeat top left;}
.right a:hover{ height:45; width:150; display:block; background: #0157a4 url('new_img/hl2b.jpg') no-repeat top left;}