Unresponsive Script warning of FireFox.

The large script run time larger than the default script run-time in the browser , it will throw Unresponsive Script warning.

Therefor we have to increase the default script run time on the browser.

1. Type "about:config" then press enter.
2. Filter the "dom.max_script_run_time" . 
3. By default the value of the dom.max_script_run_time is 10.
4. Now you can set this value to suitable and possible value. (say like 20). 
   (if the value is 0 whole firefox wait  for script to run , and it can not be use 
   while waiting .)
5. Then click OK and restart the firefox 

Warning -Keep remember

The value of dom.max_script_run_time is should not be too large. Because it will help to run bug full script in your browser.