title: Detect change of select list using Jquery
body: <p>Is there a way to detect when the value of a select list is set to empty by a javasscript and <em>not</em> by the user? It seems that the change-event only triggers by mouse or keyboard.</p>
  
  <p>And is there a way to detect when the number of options in a select list changes (added, removed)?</p>