title: How can I disable Alt+F4 event in IE browser?
body: <p>Ctrl+W and Alt+F4 command close the IE browser. 
  I want to disable this default action. I can handle with Ctrl+W command. But I can't with Alt+F4 event. I found that Alt+Keys event(eg; Alt+Enter, Alt+Right Arrow, Alt+Left Arrow) can't to disable their default action. Is it possible to disable Alt+Key event in IE browser?</p>