求一页面全屏，屏蔽所有键盘操作，且页面不能右键的代码

我只实现了全屏
<input type="BUTTON" name="FullScreen" value="考试" onClick="window.open('beginExam.asp', 'big', 'fullscreen=yes')">
但 beginExam.asp中

<script language="javascript">



if   (window.Event)    

      document.captureEvents(Event.MOUSEUP);    

   

  function   nocontextmenu()    

  {  

  event.cancelBubble   =   true  

  event.returnValue   =   false;  

   

  return   false;  

  }  

   

  function   norightclick(e)    

  {  

  if   (window.Event)    

  {  

      if   (e.which   ==   2   ||   e.which   ==   3)  

        return   false;  

  }  

  else  

      if   (event.button   ==   2   ||   event.button   ==   3)  

      {  

        event.cancelBubble   =   true  

        event.returnValue   =   false;  

        return   false;  

      }  

   

  }  

   

  document.oncontextmenu   =   nocontextmenu;     //   for   IE5+  

  document.onmousedown   =   norightclick;     //   for   all   others   





</script>

没有起作用，谁有没有全屏，屏蔽键盘，屏蔽右键的代码，发一份，实在懒得找了。谢谢。