.cooling span, .heating span, .air span {
	margin-top:1px;
	margin-bottom:1px;
	display:block;
	height:20px;
	border:1px #AAA solid;
	text-align:center;
	font-weight:bold;
	width:198px
}

.cooling div, .heating div, .air div {
	height:145;
}

.cooling div div, .heating div div, .air div div {
	padding:8px;
}

.cooling span {
	background-color:#bdcdff
}

.cooling:hover, .heating:hover, .air:hover {
	text-decoration: none;
}

.cooling:hover span {
	background-color:#FFF
}

.cooling div {
	background:url(http://www.nrgair.com/img/cooling_bg.gif)
}

.cooling div div {
	background: none;
}

.heating span {
	background-color:#c2fc8c
}

.heating:hover span {
	background-color:#FFF
}

.heating div {
	background:url(http://www.nrgair.com/img/airquality_bg.gif)
}

.heating div div {
	background: none;
}

.air span {
	background-color:#ffd9a2
}

.air:hover span {
	background-color:#FFF
}

.air div {
	background:url(http://www.nrgair.com/img/heating_bg.gif)
}

.air div div {
	background: none;
}
.arrow {
	display:block;
	width:155px;
	position:absolute;
	padding:15px;
	padding-top:33px;
	font-size:12pt;
	color:#FFF;
	height:155px;
	background:url(http://www.nrgair.com/img/arrow.png) no-repeat
}
.arrow:hover {
	color:#AAF;
}