滚动条问题（有加分）

<iframe name="mytop" src="top.htm">
<iframe name="mybottom" src="bottom.htm">top
<p>ttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttt
<script language="javascript">
function doScroll()
{
  parent.frames["mybottom"].document.body.scrollLeft = document.body.scrollLeft;
//此为两帧同长度滚动/*  parent.frames["mybottom"].document.body.scrollLeft = (document.body.scrollLeft*parent.frames["mybottom"].document.body.scrollWidth)/document.body.scrollWidth;
//此为两帧同速度滚动，但两帧不能同时调用此函数，否则溢出错
*/
}window.onscroll = doScroll;
</script>bottom
<p>bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
<script language="javascript">
function doScroll()
{
  parent.frames["mytop"].document.body.scrollLeft = document.body.scrollLeft;
//此为两帧同长度滚动/*  parent.frames["mytop"].document.body.scrollLeft = (document.body.scrollLeft*parent.frames["mytop"].document.body.scrollWidth)/document.body.scrollWidth;
//此为两帧同速度滚动，但两帧不能同时调用此函数，否则溢出错
*/
}window.onscroll = doScroll;
</script>

解决方案 »

  1.   

    可以使用系统自带的 滚动条控件
    <OBJECT id="syearScroll" style="Z-INDEX: 9; POSITION: relative;top:-3;cursor:hand" codeBase="http://activex.microsoft.com/controls/mspert10.cab" height="20" width="17" align="center" classid="CLSID:DFD181E0-5E2F-11CE-A449-00AA004A803D">
    <PARAM NAME="Min" VALUE="3000">
    <PARAM NAME="Max" VALUE="1900">
    <PARAM NAME="Position" VALUE="1900">
    <PARAM NAME="SmallChange" VALUE="1">
    <PARAM NAME="LargeChange" VALUE="1">
    <PARAM NAME="Delay" VALUE="50">
    </OBJECT>
      

  2.   

    <iframe id=a1 src="about:<p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p>"></iframe>
    <iframe src="about:<body onscroll='parent.a1.window.scrollTo(0,document.body.scrollTop)'><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p>"></iframe>
      

  3.   

    另一个FRAME中设拖动滚动条不可以？？？？？？
    一个FRAME中拖动滚动条可以有onscroll事件，你可以通过它控制
      

  4.   

    http://lucky.myrice.com/javascriptexam/index.html
    http://lucky.myrice.com/javascriptexam/scrollframe.htm