#roll_top, #fall, #ct {
	position: relative;
	cursor: pointer;
	height: 72px;
	width: 26px;
}
#roll_top {
	background: url(/skin/images/top.gif) no-repeat;
}
#fall {
	background: url(/skin/images/top.gif) no-repeat 0 -80px;
}
#ct {
	background: url(/skin/images/top.gif) no-repeat 0 -40px;
}
#roll {
	display: block;
	width: 15px;
	margin-right: -515px;
	position: fixed;
	right: 50%;
	top: 50%;
	_margin-right: -525px;
	_position: absolute;
	_margin-top: 300px;
 _top: expression(eval(document.documentElement.scrollTop));
}