js作的10秒等待按钮

<script language="javascript">
 var i=0;
 function wa()
 {
  i++;
  if (i>=10){b1.disabled=false;b1.value="赞成";return};
  b1.value="赞成("+i+ ")";
  setTimeout("wa()",1000)
 }javascript

</script>
<body οnlοad=wa()>
<input id=b1 type=button value=""  disabled="true">
<input id=b2 type=button value="不一样意"> java