#navigation a { 
	background:url(button_bg3.gif) no-repeat; 

	width:170px; 
	height:25px; 
	display:block; 
	padding-left:25px; 
	margin:5px 0; 
	font-size:13px; 
	color:white; 
	text-decoration:none; 
	line-height:25px;
	
	margin-left: auto; 
	margin-right: auto;
}

#navigation a:hover { 
	background-position:0 bottom;  
}