js 屏蔽/启用enter鍵

(1)

<script  language=javascript >
  function enter()
  {
   if(window.event.keyCode==13)
   {
    document.Form1.IbtnLogin.click();
   }
  }
  </script>

(2)

onkeypress="if ((event.keyCode == 13)) event.keyCode=0;"  <script type="text/javascript"></script>