#outer_container
{
	top: 50%;
	right: 50%;
	position: absolute;
	height: 1px;
}
#inner_container
{
	position: absolute;
	margin-top: -282px;
	margin-left: -470px;
	width: 940px;
	height: 564px;
}
.front_box
{
	font-size: 0px;
	padding: 0px;	
	margin: 0px;
}

.front_middle_box
{
	width: 940px;
	font-size: 20px;
	padding: 0px;	
	margin: 0px;
}

a.nav_link
{
	display: block;
	float: left;
	width: 256px;
	height: 275px;
}

a#about_us
{
	background: url("../images/front_about_us.jpg") 0 0 no-repeat;
}

a#about_us:hover
{
	background: url("../images/front_about_us.jpg") -256px 0 no-repeat;
}

a#consulting
{
	background: url("../images/front_consulting.jpg") 0 0 no-repeat;
}

a#consulting:hover
{
	background: url("../images/front_consulting.jpg") -256px 0 no-repeat;
}

a#simulation
{
	background: url("../images/front_simulation.jpg") 0 0 no-repeat;
}

a#simulation:hover
{
	background: url("../images/front_simulation.jpg") -256px 0 no-repeat;
}