怎样获取DIV的滚动事件

转自：http://blog.csdn.net/duckur/archive/2005/11/29/539093.aspx

1<div id="mydiv" style="overflow:scroll;width:100;height:100" onscroll="testScroll()">
...
</div>

2
<script language="javascript">
var x;
var y;

function window.onload()
{
  x = mydiv.scrollLeft;
  y = mydiv.scrollTop;
}
function testScroll()
{
  if (x != mydiv.scrollLeft)
  {
x = mydiv.scrollLeft;
alert("horizontal");
  }
  if (y != mydiv.scrollTop)
  {
y = mydiv.scrollTop;
alert("vertical");
  }
}
</script>