Hi, I have a flash movie and I am using ExternalInterface.call function to call a javascript function from within the movie. The problem is that whenever the javascript function gets executed in Mozilla Firefox, the browser becomes non-responsive. I have uploaded the file here: http://www.aakashb.0fees.net/carbon6.html This is a map of India and a javascript function in called when you click on the top-most state (that's the state of Jammu and Kashmir ). Open it in a new window...it might make your browser non-responsive too.