两种兼容IE和FF的下拉框(select)

第一种
<script type="text/javascript">
  function test()
  {
  var aa="1,测试:2,测试";
  var bb=aa.split(":");
  for(i=0;i<bb.length;i++)
  {
  document.getElementById("test2").options[i] = new Option(bb[i].split(",")[1], bb[i].split(",")[0]);
  }
  }
</script>
<select id="test1" onchange="test()">
<option>测试一下哦</option>
<option>测试</option>
</select>
<select id="test2"></select>

第二种
            var result="1,测试:2,测试:";
            var items=result.split(':');
            for(i=0;i<items.length-1;i++)
            {
                var item=items[i].split(',');
                var op=document.createElement("option");
                op.value=item[1];
                op.innerHTML=item[0]+","+item[1];
                $("end").appendChild(op);
            }