title: Removing the maxlength attribute
body: <p>is it possible to remove a maxlength attribute from an element?
  I thought that setting it to 0 would work, but it seems like FF4 then prevents entering anything. <a href="http://jsfiddle.net/hMc4y/" rel="nofollow">http://jsfiddle.net/hMc4y/</a></p>
  
  <p>I've heard that setting it to <code>-1</code> does trigger an error and <code>removeAttribute</code> does not work either.</p>