一个脚本问题 图片滚动的

Question

<div id=icefable1>
        <table width="728"  border="0" cellpadding="0" cellspacing="0">
          <tr>
            <td width="728" height="60" bgcolor="#0099CC">1</td>
          </tr>
          <tr>
            <td height="60" bgcolor="#00FFCC">2</td>
          </tr>
          <tr>
            <td height="60" bgcolor="#99FF00">3</td>
          </tr>
          <tr>
            <td height="60" bgcolor="#00CCFF">4</td>
          </tr>
          <tr>
            <td height="60" bgcolor="#FF9900">5</td>
          </tr>
          <tr>
            <td height="60" bgcolor="#FFFF33">6</td>
          </tr>
          <tr>
            <td height="60" bgcolor="red">7</td>
          </tr>
        </table>
        <script>
marqueesHeight=420;
stopscroll=false;
with(icefable1){
      style.width=0;
      style.height=marqueesHeight;
      style.overflowX="visible";
      style.overflowY="hidden";
      noWrap=true;
      onmouseover=new Function("stopscroll=true");
      onmouseout=new Function("stopscroll=false");
  }
  preTop=0; currentTop=marqueesHeight; stoptime=0;
  icefable1.innerHTML+=icefable1.innerHTML;
  function init_srolltext(){
  icefable1.scrollTop=0;
  setInterval("scrollUp()",30);
}function scrollUp(){
  if(stopscroll==true) return;
  currentTop+=1;
  if(currentTop==marqueesHeight+1)
  {
      stoptime+=1;
      currentTop-=1;
      if(stoptime==100) 
      {
          currentTop=0;
          stoptime=0;          
      }
  }
  else {      
      preTop=icefable1.scrollTop;
      icefable1.scrollTop+=1;
      if(preTop==icefable1.scrollTop){
        icefable1.scrollTop=marqueesHeight;
        icefable1.scrollTop+=1;
        
      }
  }}
init_srolltext();
    </script>
    </div>

Answer 1

首尾 相接不好   有时候出现跳动   还有就是 当marqueesHeight=420; 的时候 只能动一次也就是 当表格的高度和marqueesHeight=420; 一样的时候就只能滚动一次