ul#nav { background:url(graphics/navigation.gif); position:relative; margin:0; }
ul#nav li { float:left; list-style-type:none; }
ul#nav li a { height:26px; display:block; position:absolute; top:0; outline:none; }

ul#nav span {
display:none;
}

li#bthome a, li#btused_cars a, li#btabout a, li#btwarranty a, li#btcarsearch a, li#btcontact a {background:url(graphics/navigation.gif) }

li#bthome a 						{ background-position:0 0; width:130px; left:0 }
li#bthome a:hover					{ background-position:0 -36px }

li#btused_cars a 					{ background-position:-131px 0; width:128px; left:131px }
li#btused_cars a:hover				{ background-position:-131px -36px }

li#btabout a 						{ background-position:-260px 0; width:137px; left:260px }
li#btabout a:hover				{ background-position:-260px -36px }

li#btwarranty a 					{ background-position:-398px 0; width:139px; left:398px }
li#btwarranty a:hover				{ background-position:-398px -36px }

li#btcarsearch a 							{ background-position:-538px 0; width:100px; left:538px }
li#btcarsearch a:hover					{ background-position:-538px -36px }

li#btcontact a 						{ background-position:-639px 0; width:163px; left:639px }
li#btcontact a:hover				{ background-position:-639px -36px }