#menu {
	width: 919px;
	height: 40px;
	margin: 0 auto;
	background: black no-repeat scroll left top;
}


#menu ul  {
	height: 31px;
	width: 850px;
	margin: 0 auto;
	padding-top: 9px;
	list-style: none;
	line-height: normal;
}   
<!-- width: 850px mit Jobs, 720px ohne Jobs um zentrierte Darstellung zu erreichen -->   


#menu li {
	display: block;
	float: left;
}


#menu a {
	display: block;
	float: left;
	margin-right: 3px;
	padding: 0 40px;
	background: url(img03.gif) no-repeat right 60%;
	text-decoration: none;
	text-transform: capitalize;
	font: 14px Tahoma, Arial, Helvetica, sans-serif;
	color: #FFFFFF;
}
#menu .last a {
background: transparent;
}

#menu a:hover { 
	text-decoration: none; 
	color: grey;
}

#menu .rex-current a {
	font-weight: bold;
}