title: Javascript: Unresponsive script error
body: <p>I get an error message from Firefox "Unresponsive script". This error is due to some javascript I added to my page.</p>
  
  <p>I was wondering if the unresponsiveness are caused exclusively by code loops (function calling each other cyclically or endless "for loops") or there might be other causes ?</p>
  
  <p>Could you help me to debug these kind of errors ?</p>
  
  <p>thanks</p>