title: Upgrade jQuery 1.4.2 to 1.9.1
body: <p>We have been using jQuery 1.4.2 in our web application. Recently it was suggested that we upgrade to a newer version. So far we are thinking about upgrading to 1.9.1 as we need to support IE7 and IE8.
  Our application uses bunch of plugins e.g. fancybox, cookies, tipsy, jcarousel and bunch of others. Plus we have a lot of script files, probably around 50 files. and then some scripts embedded withing the files. I feel like this is going to be a disaster! 
  Does anyone have any advice? We are not set on yet upgrading to 1.9.1. If I want I can convince the managers to upgrade to a different version. What is our safest bet?
  Please advise.</p>
  
  <p>Thank you!</p>