如何用javascript控制iframe滚动??急用,帮忙啊

<img src="demo.gif" onmousedown="window.timer=setInterval('a.document.body.scrollTop++',10)" onmouseup="clearInterval(window.timer)">
<img src="demo.gif" onmousedown="window.timer=setInterval('a.document.body.scrollTop--',10)" onmouseup="clearInterval(window.timer)">
<iframe name=a src="test.html" scrolling=no></iframe>

解决方案 »

  1.   

    demo.htm<iframe name="in" src="in.htm"></iframe>
    <div align="center" style="height:130px;width:243px;"> 
      <script>var timer;</script>
      <br>
      <input type="button" value="up"
    onmousedown="timer1=setInterval('parent.frames[\'in\'].scrollBy(0,-1)',10)" 
    onmouseup="clearInterval(timer1)">
      <input type="button" value="down" 
    onmousedown="timer1=setInterval('parent.frames[\'in\'].scrollBy(0,1)',10)"
    onmouseup="clearInterval(timer1)" >
    </div>
    in.htm<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0<br>0
      

  2.   

    横向滚动..demox.htm<iframe name="in" src="inx.htm"></iframe>
    <div align="center" style="height:130px;width:243px;"> 
      <script>var timer;</script>
      <br>
      <input type="button" value="Left"
    onmousedown="timer1=setInterval('parent.frames[\'in\'].scrollBy(-1,0)',10)" 
    onmouseup="clearInterval(timer1)">
      <input type="button" value="Right" 
    onmousedown="timer1=setInterval('parent.frames[\'in\'].scrollBy(1,0)',10)"
    onmouseup="clearInterval(timer1)" >
    </div>
    inx.htm<body scroll=no>
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