ul#nav { 
	display: block;
	position: relative;
	background: url(../images/nav.gif) no-repeat left top;
	height: 24px;
	width: 720px;
	margin: 0 auto;
	padding: 0px;
}
ul#nav span {
	display: none;
}

ul#nav li {
	list-style-type: none;
	display: inline;
	float: left;
	height: 24px;
}

ul#nav li a {
	height: 24px;
	display: block;
	position: relative;
}

ul#nav li#home-nav { width: 84px; }
ul#nav li#help-nav { width: 164px; }
ul#nav li#who-nav { width: 127px; }
ul#nav li#expertise-nav { width: 138px; }
ul#nav li#projects-nav { width: 105px; }
ul#nav li#contact-nav { width: 102px; }

ul#nav li#home-nav a:hover {
	background: url(../images/nav.gif) 0px -24px no-repeat;
}

ul#nav li#help-nav a:hover {
      background: url(../images/nav.gif) -84px -24px no-repeat;
}

ul#nav li#who-nav a:hover {
      background: url(../images/nav.gif) -248px -24px no-repeat;
}

ul#nav li#expertise-nav a:hover {
      background: url(../images/nav.gif) -375px -24px no-repeat;
}

ul#nav li#projects-nav a:hover {
      background: url(../images/nav.gif) -513px -24px no-repeat;
}

ul#nav li#contact-nav a:hover {
      background: url(../images/nav.gif) -618px -24px no-repeat;
}