body {
	font-family: 'Trebuchet MS';
	font-size: 12px;
	background: #fafafa;
	padding:0px;
	margin:0px;
}
h2{
	color: #3080d0;
	font-weight: bolder;
	font-size: 15px;
	margin-top: 25px;
	text-align: center;
}
.body {
	height: 520px;
	width: 900px;
	margin: 20px auto 0px auto;
}
.head {
	text-align: center;
	margin-top: 20px;
}
.arena {
	position: absolute;
	width: 900px;
	height: 500px;
	background: #ffffff;
	border: #ffcccc 1px solid;
}
.arena div {
	position: absolute;
	width: 10px;
	height: 10px;
	cursor: pointer;
	line-height: 0px;
	font-size: 0px;
	filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true, sizingMethod=scale, src='tile.png');
}
.arena div[id] {
	background: url('tile.png');
}