title: Onchange event of Dropdownlist
body: <p>I have a dropdown list. I am using <code>onchange</code> event of this dropdown to show some text in a textbox below.
  Its perfectly fine, but I want to to do something like this:---</p>
  <blockquote>
  <p>If user click on the drop down then the whole list will be populated. right.. Now if he is trying to choose the value from the list using up/down arrow button of the key board I want to fire the event at that time. How can I do this?</p>
  </blockquote>
  <p><code>Onchange</code>  is not working for this purpose.</p>