title: Clicking on scrollbar causes unintential firing of event
body: <p>Morning - I'm having a little problem.</p>
  
  <p>I have an autocomplete extender textbox where a user types in words and suggestions are provide. Should the term be rather generic, a list appears and the user can scroll up or down using the mouse wheel with no problems at all.</p>
  
  <p>However, if the user attempts to click on the scroll bar and scroll through the list, it fires the textchanged event - which I don't want it to do.</p>
  
  <p>This event should only fire once the user has actually selected the appropriate product from the list supplied. </p>
  
  <p>I can set the autopost back of the text file off which has the desired effect but I do require the post back to be performed once the user selects a suggestion.</p>
  
  <p>Does anyone know how I can get around this? </p>