#float_banner_bg {
	position:fixed;
	left:0;
	width:100%;
	height:100%;

	position:absolute;
	top: expression(eval(document.documentElement.scrollTop) + "px");
	height:expression(parseInt(document.documentElement.clientHeight) + "px");
	background:#666666;
	filter: alpha(opacity=75);

}
html>/**/body #float_banner_bg {
	height:100%;
	top:0;
	background:url(t.png);
}
#float_banner {
	position:fixed;
	top:50%;
	left:50%;
	margin-left:-405px;
	margin-top:-337px;
	background:#8B8B8B;
	padding:5px 5px 5px;
	_position: absolute;
	_top: expression(eval(document.documentElement.scrollTop) + parseInt(document.documentElement.clientHeight/2) + "px");
}
.close_btn {text-align:right; }
.close_btn a {color:#fff; font-size:14px;}
html>/**/body .close_btn img {display:inline; margin-bottom:0}
html {background: url(body_bg_title.gif) no-repeat; background-attachment: fixed;}