<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">
	function getScroll(id){
	var obj = document.getElementById(id);
	var timer = null;
	positionFixed(obj);
	if(obj){
		obj.style.display = 'none';
		window.onscroll=function(){
			getScrollTop() &gt; 0 ? obj.style.display = "block" : obj.style.display = "none";
		}
		obj.onclick=function(){
			var timer = setInterval(sMove,10);
			function sMove(){
				setScrollTop(getScrollTop() / 1.5);
				if(getScrollTop() &lt; 1)clearInterval(timer);
			}
		}
	}
}
//åˆ¤æ–­IE6
function positionFixed(obj){
	var iE6 = !-[1,] &amp;&amp; !window.XMLHttpRequest;
	if(obj){
		var top = obj.offsetTop;
		if(iE6){
			document.documentElement.style.textOverflow = "ellipsis";
			obj.style.position = "absolute";
			obj.style.setExpression("top", "eval(documentElement.scrollTop + " + top + ') + "px"');
		}
	}
}
//èŽ·å–æ»šåŠ¨æ¡Top
function getScrollTop(){
	return document.documentElement.scrollTop || document.body.scrollTop;
}
//å›žåˆ°é¡¶éƒ¨
function setScrollTop(value){
	document.documentElement.scrollTop = value;
	document.body.scrollTop = value;
}
window.onload = function(){
	getScroll('div1');
};
</pre></body></html>