body {
	text-align: center;
	background: #454545;
	height: 100%;
}

#container { 
	height: 100%; /*fill the body*/ 
	text-align: center; /*H-centering in early IE versions*/ 
} 

#content {
	background: url('../images/construction.png') no-repeat;
	width:800px;
	height:500px;
	margin: 0 auto;
	position: relative; /*allows for top property to move the element*/ 
	top: 50%; /*moves it 50% of #container's height down the page*/ 
	margin-top: -300px; /*pulls it back up by half it's height*/ 
	margin-left: auto; /*H-centering in complaint browsers*/ 
	margin-right: auto; /*H-centering in complaint browsers*/ 
}