div#contents {
        float:			right;
	clear:			both;
}

div#contents div#documents {
	float:			left;
	width:			40%;
	height:			24em;
	overflow:		hidden;
}
div#contents div#other-contents {
	float:			left;
	width:			30%;
	height:			24em;
	overflow:		hidden;
}
div#contents div#infomations {
	float:			right;
	width:			30%;
	height:			24em;
	overflow:		hidden;
}