title: a way to restore the native escape function after it has been overwritten?
body: <p>I didn't know you could do this until I had banged my head against the wall on a troublesome bug and finally figured out we were failing because some jquery plugin had overwritten the escape function.  So this will put up an alert and docwrite null:</p>
  
  <pre><code>escape = function(a){alert(a)}
  document.write(escape("Need tips? Visit W3Schools!"));
  </code></pre>
  
  <p>Cool! (not).</p>
  
  <p>Is there a way to restore the native escape function?</p>