/* CSS Document */
body {
	_background-image: url(about:blank);     /*用浏览器空白页面作为背景*/
	_background-attachment: fixed;             /* prevent screen flash in IE6 确保滚动条滚动时，元素不闪动*/
}
#toTop{
	width:40px;
	height:40px;
	position:fixed;
	bottom:20px;
	right:0px;
	_position: absolute;
	_bottom:auto;
	_top:expression(eval(document.documentElement.scrollTop+document.documentElement.clientHeight-this.offsetHeight-75-(parseInt(this.currentStyle.marginTop,10)||0)-(parseInt(this.currentStyle.marginBottom,10)||0)));
		background-repeat: no-repeat;
		height: 40px;
		display: none;
}
#toTop img{
	border:none;
	width:40px;
	height:40px;
}