.contents
{
	margin-top: 10px;
	margin-bottom:10px;	
}

.content_top_header
{
	width: 900px;
	height: 360px;

}

.content_top_menus
{
	margin-top: 10px;
	margin-right: -8px;
}

.content_top_menus > ul > li
{
	height: 218px;
	width: 218px;
	list-style-type: none;
	float: left;
	margin-right: 9px;
	margin-bottom: 9px;
	background-image: url('../images/dark1.jpg');
	background-position: left top;
	background-repeat: no-repeat;
}

.content_top_menus > ul > li > a.hover > img {
  opacity: 0.8;
  filter: alpha(opacity=80);
  -ms-filter: "alpha(opacity=80)";
}