title: Opening Custom Protocol in FireFox Browser..!
body: <p>I have created a custom Protocol <code>myapp:</code> just like <code>mailto:</code> which opens one <em>exe</em> at client side using JavaScript. So, whenever that JavaScript I call there opens a dialog box asking for selecting the application through which I want to open. 
  I just wanted to set the default application through which it opens in the code and doesn't open that dialog box. I know that I can manually change from always ask to set default in setting of Mozilla Browser, but I wanted it through Code. so that user does not have to do any thing.
  Is it possible? If yes, please guide me how I can achieve this.</p>