div#ulnav {
	margin-left: auto;
	margin-right: auto;
	margin-bottom: 0px;
	margin-top: 0px;
	padding: 0;
	width: 600px;
	clear: both;
	height: 21px;
	position: absolute;
	top: 77px;
	left: 25%;
	right: 50%;
}

#nav {
	margin: 0;
	padding: 11;
	height: 21px;
	list-style: none;
	display: inline;
	overflow: hidden;
	width: 629px;
	}

#nav li {
	margin: 0; 
	padding: 0;
   list-style: none;
	display: inline;
	}

#nav a {
	float: left;
	padding: 21px 0 0 0;
	overflow: hidden;
	height: 0px !important; 
	height /**/:21px; /* for IE5/Win only */
	}
	
#nav a:hover {
	background-position: 0 -21px;
	}

#nav a:active, #nav a.selected {
	background-position: 0 -42px;
	}
	
	
/* rules */

#thome a  {
	width: 47px;
	background: url(/es/images/nav_home.gif) top left no-repeat;
	}
	
#toa a  {
	width: 120px;
	background: url(/es/images/nav_about.gif) top left no-repeat;
	}
	
#tproj a  {
	width: 78px;
	background: url(/es/images/nav_projects.gif) top left no-repeat;
	}
	
	
#tcoll a {
	width: 74px;
	background: url(/es/images/nav_collab.gif) top left no-repeat;
	}
	
#tcontact a {
	width: 79px;
	background: url(/es/images/nav_contact.gif) top left no-repeat;
	}
	
#tmap a {
	width: 28px;
	background: url(/es/images/nav_tools_1.gif) top left no-repeat;
	margin-left: 10px;
}
	
#tinfo a {
	width: 26px;
	background: url(/es/images/nav_tools_2.gif) top left no-repeat;
}

#tprint a {
	width: 29px;
	background: url(/es/images/nav_tools_3.gif) top left no-repeat;
}