ul#nav {
	background:url(../graphics/navigation.gif);
	margin:0;
	height: 37px;
	width:626px;
	margin-left:340px;
	
	position:absolute;
	top: 100px;
	z-index:100;
	
}
ul#nav li { float:left; list-style-type:none; }
ul#nav li a { height:37px; display:block; position:absolute; top:0; outline:none; }

ul#nav span {
display:none;
}

li#bthome a, li#btwindows a, li#btdoors a, li#btconservatories a, li#btcontact a {background:url(../graphics/navigation.gif) }

li#bthome a 						{
	background-position:0px 0; width:115px; left:0px;
}
li#bthome a:hover, li#bthome.current a				{ background-position:0px -37px; }

  

li#btwindows a 					{ background-position:-116px 0; width:108px; left:116px }
li#btwindows a:hover, li#btwindows.current a				{ background-position:-116px -37px }


li#btdoors a 						{ background-position:-224px 0; width:85px; left:224px }
li#btdoors a:hover, li#btdoors.current a							{ background-position:-224px -37px }

li#btconservatories a 						{ background-position:-310px 0; width:170px; left:310px }
li#btconservatories a:hover, li#btconservatories.current a							{ background-position:-310px -37px }

li#btcontact a 						{ background-position:-481px 0; width:144px; left:481px }
li#btcontact a:hover, li#btcontact.current a							{ background-position:-481px -37px }