<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<script>
function test(){
if(document.all.one.value.length>0){
document.all.oneok.value='1'
}else{
document.all.oneok.value='0'
}
}
</script>
</HEAD><BODY>
<input name="one" type="text" class="Input2" id="one2"  onkeyup="test();"> <select name="oneok" >
      <option value="1">有效</option>
      <option value="0" selected>无效</option>
 </select></BODY>
</HTML>