#homeabout {
	overflow: hidden;
	left: 0px;
	top: 0px;
	width: 90px;
	height:90px;
	float: left;
	margin-right: 10px;
	position: relative;
}
#homeabout a {display:block; width: 90px; height: 90px; background-image: url(../images/homepage/about.jpg); background-position: 0 0;}
#homeabout a:hover {background-position: 0 -90px;}

#homeenergy {overflow: hidden; left: 0px; top: 0px; width: 90px; height:90px; float: left; margin-right: 10px;}
#homeenergy a {display:block; width: 90px; height: 90px; background-image: url(../images/homepage/energy.jpg); background-position: 0 0;}
#homeenergy a:hover {background-position: 0 -90px;}

#homelearn {overflow: hidden; left: 0px; top: 0px; width: 90px; height:90px; float: left; margin-right: 10px;}
#homelearn a {display:block; width: 90px; height: 90px; background-image: url(../images/homepage/learn.jpg); background-position: 0 0;}
#homelearn a:hover {background-position: 0 -90px;}

#homedo {overflow: hidden; left: 0px; top: 0px; width: 90px; height:90px; float: left; margin-right: 10px;}
#homedo a {display:block; width: 90px; height: 90px; background-image: url(../images/homepage/do.jpg); background-position: 0 0;}
#homedo a:hover {background-position: 0 -90px;}

#homemore {overflow: hidden; left: 0px; top: 0px; width: 90px; height:90px; float: left; margin-right: 10px;}
#homemore a {display:block; width: 90px; height: 90px; background-image: url(../images/homepage/more.jpg); background-position: 0 0;}
#homemore a:hover {background-position: 0 -90px;}