body {
	background-color: #666666;
}
#header {
	background-color: #CCCCCC;
	height: 200px;
	width: 900px;
	position: absolute;
	left: 40px;
	top: 10px;
	padding: 5px;
	font-family: Verdana, Arial, Helvetica, sans-serif;
}
#main {
	background-color: #333333;
	padding: 10px;
	height: 450px;
	width: 900px;
	position: absolute;
	left: 40px;
	top: 210px;
}
#comp {
	font-family: Arial, Helvetica, sans-serif;
	font-size: 14px;
	background-color: #CCCCCC;
	padding: 5px;
	height: 250px;
	width: 900px;
	position: absolute;
	left: 40px;
	top: 265px;
}
#tool {
	font-family: Arial, Helvetica, sans-serif;
	font-size: 14px;
	background-color: #CCCCCC;
	padding: 5px;
	height: 200px;
	width: 900px;
	position: absolute;
	left: 40px;
	top: 550px;
}	
#overlay  {
	height: 600px;
	width: 900px;
	position: absolute;
	top: 250px;
	background-position: 40px 250px;
	overflow: visible;
	visibility: visible;