a {
	outline:none;
}

div#image-nav {
	width:898px;
	height:133px;
	margin:0 auto;
	padding-bottom:27px;
}

ul#nav-images {
	padding:0; 
	margin:0;
	list-style:none; 
	width:898px; 
	height:133px;
}

ul#nav-images li {
	float:left;
}

ul#nav-images li a.heating {
	display:block; 
	width:178px; 
	height:133px; 
	background:url(../images/image-nav/heating.jpg) no-repeat 0 -133px; 
	text-indent: -9999px;
}

ul#nav-images li a.heating:hover {
	background-position: 0 0;
}

ul#nav-images li a.cooling {
	display:block; 
	width:180px; 
	height:133px; 
	background:url(../images/image-nav/cooling.jpg) no-repeat 0 -133px; 
	text-indent: -9999px;
}

ul#nav-images li a.cooling:hover {
	background-position: 0 0;
}

ul#nav-images li a.plumbing {
	display:block; 
	width:179px; 
	height:133px; 
	background:url(../images/image-nav/plumbing.jpg) no-repeat 0 -133px; 
	text-indent: -9999px;
}

ul#nav-images li a.plumbing:hover {
	background-position: 0 0;
}

ul#nav-images li a.electrical {
	display:block; 
	width:181px; 
	height:133px; 
	background:url(../images/image-nav/electrical.jpg) no-repeat 0 -133px; 
	text-indent: -9999px;
}

ul#nav-images li a.electrical:hover {
	background-position: 0 0;
}

ul#nav-images li a.commercial {
	display:block; 
	width:180px; 
	height:133px; 
	background:url(../images/image-nav/commercial.jpg) no-repeat 0 -133px; 
	text-indent: -9999px;
}

ul#nav-images li a.commercial:hover {
	background-position: 0 0;
}