title: css - menu loses height after a few rollovers
body: <p>We have a live site and a dev reskin which uses the same menu, but for some reason the dev version has a peculiar issue with the top slide down menu, i.e. if you roll over it a few times, it starts losing height.</p>
  
  <p>Dev version: <a href="http://ithea.jwgecko.com/index.cfm" rel="nofollow">http://ithea.jwgecko.com/index.cfm</a>
  Live site: <a href="http://ithea.vic.edu.au/" rel="nofollow">http://ithea.vic.edu.au/</a></p>
  
  <p>Any ideas what could be the problem?</p>