body { 
FONT-SIZE: 9pt; 
COLOR: #000000; 
FONT-FAMILY: "宋体"; 
BACKGROUND-COLOR: #0099FF;
scrollbar-face-color: #4cbebe; 
scrollbar-shadow-color: #337f7f; 
scrollbar-highlight-color: #000099; 
scrollbar-3dlight-color: #4cbebe; 
scrollbar-darkshadow-color: #000099; 
scrollbar-track-color: #0099FF; 
scrollbar-arrow-color: #ff0000;
}

解决方案 »

  1.   

    <textarea id=aa style="overflow:hidden" width="20" height="20">
    asdf
    asdf
    asdf
    asdf
    sadf
    asdf
    asdf
    asdf
    asdf
    asdf
    asdf
    asd
    f</textarea>
    <button onmouseup=stop() onmousedown=up()>up</button><button onmousedown=down() onmouseup=stop()>down</button>
    <script>
    var Timer=null;
    function up()
     {aa.doScroll("scrollBardown")
      Timer=setTimeout("up()",100)
     }
    function down()
    {aa.doScroll("scrollBarUp")
      Timer=setTimeout("down()",100)
     }
    function stop()
    {clearTimeout(Timer)}
    </script>
      

  2.   

    不太明白
    难道这样不是你说的效果吗?
    <textarea id=aa width="20" height="20" rows=1>
    1
    2
    3
    </textarea>