隐藏table中的td代码加了参数就不能用了，请看一下什么地方错了

Question

<script>
function view1_hidden(hidname) {         
  if(hidname.style.display=='') {
     hidname.style.display='none';
  }else {
     hidname.style.display='';          
  }
}
</script>触发：<input type=button onclick="view1_hidden(caseview)">
<div id="caseview" style="DISPLAY:none">
　　一个table，隐藏内容
</div>

Answer 1

tryfunction view1_hidden(hidname)
{         
         var c = document.all(hidname);
         if(c.style.display=='')
         {
          c.style.display='none';
         }else
         {
           c.style.display='';          
         }
}onclick="view1_hidden('caseview')"

Answer 2

function view_hidden(hidname)
         {          
         document.all.hidname.style.visibility='hidden';
         }
触发：onclick="view_hidden(caseview)
<div id="caseview" style="visibility:visible">
　　一个table，隐藏内容
</div>