监听IE关闭

Java code

<script language=”JavaScript” type=”text/javascript”>   //-------------------------------------------------------   // Specifies a function for the window's onbeforeunload event   // Call back to the getUnsavedDataWarning in our Flex app when the browser is about to unload   //-------------------------------------------------------   //window.onbeforeunload = function()      window.onbeforeunload = onbeforeunload_handler;   function onbeforeunload_handler()    {       var warning="";       var fxControl = document.${application} || window.${application};       if ( fxControl )           if ( typeof fxControl.getUnsavedDataWarning=="function")                warning = fxControl.getUnsavedDataWarning();    // This calls a function in our Flex app              if ( warning != '' )            return warning;       else            return void(0);    }       //-------------------------------------------------------   // Specifies a function for the window's onunload event   // Call back to the javascriptOnUnload in our Flex app when the browser unloads   //-------------------------------------------------------   window.onunload = function()    {       var fxControl = document.${application} || window.${application};       if ( fxControl )           if ( typeof fxControl.javascriptOnUnload=="function")               fxControl.javascriptOnUnload();  // This calls a function in our Flex app   }   </script>private const UNSAVED_DATA_WARNING:String = 'You have unsaved changes. You will lose them if you continue.';                      private function onCreationComplete():void {           ExternalInterface.addCallback("getUnsavedDataWarning",               function():String {                   return UNSAVED_DATA_WARNING;               }           );       }

我现在通过这个方法可以监听到ie关闭事件，但是我想禁止ie关闭应该要怎么做呢，现在这么写点确定还是会关闭ie

[解决办法]
这个好像控制不了呀，，直接关IE的关闭按钮去掉得了，
html里都可以设置IE的样式呀，，去掉边框，再自己模拟一个边框得了
[解决办法]
参考
http://topic.csdn.net/u/20090619/10/5725dbba-6376-4605-b318-8e009d987fbc.html?8083