body {
	color: #000;
	margin: 0;
	padding: 0;
}

#top_frame {
	background-color: #505040;
	color: #fff;
	filter: alpha(opacity=100);
	-moz-opacity: 1;
	opacity: 1;
	padding: 0;
	text-align: left;
	z-index: 999;
	position: fixed;
	width: 800px;
	height: 30px;  /* フレームの高さ */
	top: 0;
        left:52%;
	margin-left: -430px;
}

#under_frame {
	margin-left: auto;
	margin-right: auto;
	margin-top: 35px;
	_overflow: auto;
	padding: 0;
	text-align: left;
	width: 800px;
}