帮我看看，这段代码该怎样写？

ycjnx 2002-03-22 04:27:57

<body bgcolor="#F5F5FA" leftmargin=0 topmargin=0 width=145>
<img id="up" src="images/dot.gif" onmouseover="moveup()" onmouseout="stop()">
<br>
<br>
<br>
<br>
<img id="up" src="images/dot.gif" onmouseover="movedown()" onmouseout="stop()">
<script language="javascript">
function moveup()
{
window.parent.left.scrollBy(0,-20);
window.setTimeout("moveup()",500);
}
function movedown()
{
window.parent.left.scrollBy(0,20);
window.setTimeout("movedown()",500);
}
function stop()
{
}

</script>
我想实现将鼠标放于图形上，左侧的frame中的内容就自动滚动。
onmouseover事件只激发一次，如何才能够让左侧内容连续滚动？到底部或顶部时自动停止。

...全文

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weidegong 2002-03-22

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好玩

ycjnx 2002-03-22

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解决了，拿出来与大家共享
多谢slowpoke(慢慢來)提供的代码。

//main.asp
<frameset cols="100,*" frameborder="0" border="0" framespacing="0" marginwidth=0 marginheight=0>
<frame name="left" scrolling="NO" src="left.asp" target="_self">
<frame name="right" scrolling="NO" noresize src="right.asp" target="_self" marginwidth=0 marginheight=0>
</frameset>

//left.asp
要显示的文本内容。

//right.asp
<body bgcolor="#F5F5FA" leftmargin=0 topmargin=0 width=145>
<img id="up" src="images/dot.gif" onmouseover="movedown()" onmouseout="sc()">
<br>
<br>
<br>
<br>
<img id="up" src="images/dot.gif" onmouseover="moveup()" onmouseout="sc()">
<script language="javascript">
var currentpos,timer;
function moveup()
{
timer=setInterval('scrollwindow()',10);
}
function movedown()
{
timer=setInterval('scrollwindow2()',10);
}
function sc(){
clearInterval(timer);
}
function scrollwindow()
{
currentpos=window.parent.left.document.body.scrollTop;
window.parent.left.scroll(0,++currentpos);
if (currentpos != window.parent.left.document.body.scrollTop)
sc();
}
function scrollwindow2()
{
currentpos=window.parent.left.document.body.scrollTop;
window.parent.left.scroll(0,--currentpos);
if (currentpos != window.parent.left.document.body.scrollTop)
sc();
}
//document.onmousedown=sc
//document.ondblclick=initialize
</script>