* {
	padding:0;
	margin:0;
	font-size:12px;
}
ol,ul,li {
	list-style:none
}
img {
	border:none
}
/* box */
.box {
	width:564px;
	height:361px;
	margin:20px auto;
	position:relative;
	display:none;
}
.ad_time {
	width:554px;
	height:351px;
	background:#000;
	filter:alpha(opacity=50);
	-moz-opacity:0.5;
	opacity:0.5;
	padding:5px;
	position:absolute;
	top:0;
	left:0;
	color:#fff;
}
.ad_time span {
	font-weight:bold;
	color:#cc0;
	padding:0 5px;
}
.close {
	width:49px;
	height:20px;
	position:absolute;
	top:0;
	right:0;
	cursor:pointer;
}
.btn {
	width:100px;
	height:30px;
	background:#eee;
	border:1px solid #ddd;
	font:normal 12px/30px '微软雅黑';
	text-align:center;
	margin:20px auto;
	cursor:pointer;
}