html {
	height: 100%;
}
body {
	width:100%;
	height:100%;
	margin: 0;
	padding:0;
}
#top_image{
	width:960px;
	height:400px;
	display:table;
}
#top_image .textbox {
	width: 100%;
	display: table-cell;
	background-image: url(../img/f2.png);
	background-repeat: repeat-x;
	background-position: right bottom;
}
.catch {
	width: 960px;
}

#down_btn{
	position:absolute;
	text-align:center;
	width:100%;
}