div.content_footer
{
	width:100%;
	height:100px;
	background: url("../img/body_btm.png") no-repeat;
	clear:both;
}

div.ad
{
	float:right;
	margin-right:50px;
	visibility:none;
}

div.ad img
{
	width:180px;
	height:41px;
	border:none;
}