滚动条如何控制层的移动
滚动条如何控制层的移动
[解决办法]
<html xmlns="http://www.w3.org/1999/xhtml"><head runat="server"> <title>无标题页</title> <script type="text/javascript"> var b = document.documentElement||document.body; var divPositionTop = 100,ST=0,Temp=0; function SetDiv(obj){ var divTop = parseInt(obj.style.top); ST = b.scrollTop; if(divPositionTop+ST!=divTop){ Temp=Math.ceil((divPositionTop+ST-divTop)*0.1); obj.style.top=(divTop+Temp)+"px" } } window.onload = function(){ var obj = document.getElementById("test"); setInterval(function(){SetDiv(obj)},10) } </script></head><body style="height:2000px;"> <div id="test" style="position:absolute;top:100px;right:10px;background:#000;width:100px;height:100px"></div></body></html>