#moquu_top{
	z-index:2;
	width:50px;
	height:50px;
	right:10px;
	position:fixed;
	cursor:pointer;
	_position:absolute;
	_bottom:auto;
	_top:expression(eval(document.documentElement.scrollTop+document.documentElement.clientHeight-this.offsetHeight-(parseInt(this.currentStyle.marginTop,10)||0)-(parseInt(this.currentStyle.marginBottom,10)||0)))
}


#moquu_top {
	top:516px;
	_margin-top:516px;
	background:url(../images/sbtn.png) 0 -101px;
	width:50px;
	height:50px
}
#moquu_top:hover {
	background:url(../images/sbtn.png) -50px -101px
}