怎么设定滚动条一次滚动的大小

[zero1977]

我想把它设置为一次滚动一个象素，可以吗？

[zero1977]

不是，我是想鼠标单击滚动按钮，一次只移动一个象素

[seabell]

效果比较怪啊
<p>ballack1
<p>ballack2
<p>ballack3
<p>ballack4
<p>ballack5
<p>ballack6
<p>ballack7
<p>ballack8
<p>ballack9
<p>ballack0
<p>ballack1
<p>ballack2
<p>ballack3
<p>ballack4
<p>ballack5
<p>ballack6
<p>ballack7
<p>ballack8
<p>ballack9
<p>ballack0
<script>
lasttop=0;
function myscroll()
{
if(document.body.scrollTop>lasttop)
{
document.body.scrollTop=lasttop+1;
}
else
if(document.body.scrollTop<lasttop)
{
document.body.scrollTop=lasttop-1;
}
lasttop=document.body.scrollTop;
setTimeout(myscroll,100);
}
myscroll();
</script>

[seabell]

<p>ballack
<p>ballack
<p>ballack
<p>ballack
<p>ballack
<p>ballack
<p>ballack
<p>ballack
<p>ballack
<p>ballack
<p>ballack
<p>ballack
<p>ballack
<p>ballack
<p>ballack
<p>ballack
<p>ballack
<p>ballack
<p>ballack
<p>ballack
<script>
document.onclick=myscroll;
function myscroll()
{
document.body.scrollTop++;
}
</script>