title: window.close() problems
body: <p>This works in IE, Chrome and Safari.</p>
  
  <p>How Can I make this work in FF and Opera? Is this going to work in Mobile devices like android or iOS? Or it depends on the browser you are using?</p>
  
  <pre><code>var answer = confirm ("La lectura del código ha FALLADO. Pulse CANCELAR para volver a intentar");
  if (!answer)
  window.close();
  
  else(answer)
  window.location="http://www.google.com/"
  </code></pre>