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网页编程－在option下拉菜单选项中添加图片

<h2 align=center>option下拉菜单选项中添加图片（原创）</h2>
<h3 align=center>作者 neweroica</h3>
<h3 align=center>2002-11-21 14:33</h3>
<script>
//*****************************************************************
//
//                   作者 neweroica
//                  2002-11-21 14:33
//               欢迎大家引用，但请保留此版权信息，谢谢！
//
//******************************************************************
var h=0;
function doSelect(id){
  if(h%2==0)
    list.style.display='';
  else
    list.style.display='none';
  h++;
  eval('title.innerHTML=title_'+id+'.value');
}
function selectList(imgSrc,i,id){
  title.innerHTML='<img src='+imgSrc+'>';
    eval('value_'+id+'.value='+(i+1));
}
function endSelect(){
  list.style.display='none';
  h=0;
}
function chBg(){
  if(h%2==0)
    list.style.display='';
  else
    list.style.display='none';
  h++;
}
function build(id,title,left,top,width,height,images){
  dw=document.write;
  dw('<input type=hidden id=title_'+id+' value='+title+'>');
  dw('<input type=hidden id=value_'+id+' value=0>');
  dw('<table width='+width+' height='+height+' cellspacing=0 cellpadding=0 style="position:absolute;left:'+left+';top:'+top+';border:1px solid #000000;">');
  dw('<tr><td id=title>'+title+'</td></tr></table>');
  dw('<table id=list width='+width+' height='+height+'  cellpadding=0 cellspacing=0 style="position:absolute;left:'+left+';top:'+(top+height)+';border:1px solid #000000;display:none;">');
  for(var i=0;i<images.length;i++){
    dw('<tr><td onmouseover=this.style.backgroundColor="#000088"; onmouseout=this.style.backgroundColor="#ffffff"; onblur=selectList("'+images[i]+'",'+i+',"'+id+'")><img src='+images[i]+'></td></tr>');
 }
  dw('</table><input type=image src=http://202.112.86.128/studentspace/aqyw/js/option/sltBtn.gif style="position:absolute;left:'+(left+width-17)+';top:'+(top+2)+';" onclick=doSelect("'+id+'") onblur=endSelect()>');
}
//********************************************************************************
//这里是下拉菜单中的各个图片路径
var img=new Array(
                   "images/logo.gif",
                   "images/logo.gif",
                   "images/logo.gif",
                   "images/logo.gif",
                   "images/logo.gif"
                  );
//建立一个下拉菜单
build('myOption','请选择图象',400,150,100,20,img); //各参数的意义：id,title,left,top,width,height,images
//**********************************************************************************
</script>

<br><br><br><br><br><br><br><br><div align=center>当前选项<input id=optInd size=5 value=0></div>
<script>
function chk(){
  optInd.value=value_myOption.value;
  setTimeout("chk()",500);
}chk();
</script>