title: How to change this jQuery widget (written for jQueryUI 1.7) so that it works with jQueryUI 1.8
body: <p><a href="http://jsfiddle.net/h8vnw/" rel="nofollow">This jQuery plugin</a>, which lets users draw rectangles in a div, works with jQueryUI 1.7.2.</p>
  
  <p>I need to get it working with <a href="http://jsfiddle.net/YdRpG/" rel="nofollow">jQueryUI 1.8.4</a>. From reading the <a href="http://jqueryui.com/docs/Upgrade_Guide" rel="nofollow">widget upgrade guide</a>, I can't work out what needs to change. I tried renaming _init() to _create(), but that didn't do anything. What else do I need to change to get it working? Thanks for reading.</p>