title: Can't use window.external.notify() after UglifyJS compressed
body: <p>recently I've used UglifyJS to compress my js codes for testing. Then I found that after compression, I can't use <code>window.external.notify()</code> to notify the WebBrowser control outside. My demo codes are here:</p>
  
  <pre><code>function MyNotify () {
      try{
          alert("Notify");
          window.external.notify("Notify");
      } catch (e){
          alert(e.message);
      }
  }
  
  function MyNotifyCompressed(){
      try {
          alert("Notify"), window.external.notify("Notify");
      } catch (e) {
          alert(e.message);
      }
  }
  </code></pre>
  
  <p>Then I call <code>WebBrowser.InvokeScript("MyNotifyCompressed")</code>, it alerts me something like this:</p>
  
  <blockquote>
    <p>Object doesn't support this action</p>
  </blockquote>
  
  <p>Why can't I call the <code>window.external.notify()</code> method after compression?</p>