javascript not responding

In my webapp I am receiving this message:

"A script on this page may be busy, or it may have stopped responding. You can stop the script now".

What should I do?

That generally means that you have a script that is stuck in an infinite loop. Stop the script and take a look at your javascript to see what it is doing.

Many browsers have built in developer tools which will aid you in debugging your script. Use those tools to figure out why your script is behaving incorrectly.