html{
	height:100%;
}

body{
	height:100%;
	padding:0;
	margin:0;
}

#top_image{
	width: 100%;
	height: 100%;
	display: table;
	overflow: hidden;
	position: relative;
}
#top_image .textbox {
	display:table-cell;
	vertical-align:middle;
	text-align:center;
}
#down_btn{
	position:absolute;
	text-align:center;
	width:100%;
	bottom:20px;
	opacity: 0.9;
	filter: alpha(opacity=90);	
}

/*
.catch {
	width: 960px;
	margin-right: auto;
	margin-left: auto;
	margin-top: 800px;
}
*/