div.button
{
	position: absolute;
	width: 155px;
	height: 20px;
}

div#aable:hover
{
	background: url("menu-images/aable-on.png");
}
div#aable
{
	background: url("menu-images/aable-off.png");
}
div#about:hover
{
	background: url("menu-images/about-on.png");
}
div#about
{
	background: url("menu-images/about-off.png");
}
div#contact:hover
{
	background: url("menu-images/contact-on.png");
}
div#contact
{
	background: url("menu-images/contact-off.png");
}
div#careers:hover
{
	background: url("menu-images/careers-on.png");
}
div#careers
{
	background: url("menu-images/careers-off.png");
}
div#contractor:hover
{
	background: url("menu-images/contractor-on.png");
}
div#contractor
{
	background: url("menu-images/contractor-off.png");
}
div#engineered:hover
{
	background: url("menu-images/engineered-on.png");
}
div#engineered
{
	background: url("menu-images/engineered-off.png");
}
div#pre-engineered:hover
{
	background: url("menu-images/pre-engineered-on.png");
}
div#pre-engineered
{
	background: url("menu-images/pre-engineered-off.png");
}
div#service:hover
{
	background: url("menu-images/service-on.png");
}
div#service
{
	background: url("menu-images/service-off.png");
}

a
{
text-decoration: none;
}