title: SWFUpload gives the error "Invalid function name: ReturnUploadStart" in Firefox only
body: <p>I'm using SWFUpload to upload files on my website. It works fine in all browsers except Firefox, where it always gives the javascript error <code>Invalid function name: ReturnUploadStart</code> as soon as the upload starts.</p>
  
  <p>I'm using SWFUpload 2.2.0 Beta 2 with jquery-asyncUpload-0.1.js. I'm using Firefox 6.0.2</p>
  
  <p>What gives?</p>