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33.4. FIREFOX: How to Make Firefox Wait Longer for a Timeout

Step 1

Launch Firefox and type the following into the browser's address bar:
about:config

Step 2

Press "Enter" to view a Firefox warning page. This page points out that changes you make on the Settings page can be harmful if you do not know what you are doing.

Step 3

Click "I'll Be Careful, I Promise" to view the settings page. This page consists of a table containing preferences.

Step 4

Type the following into the page's "Search" text box:
dom.max_script_run_time
When Firefox locates that preference, double-click the number that appears in the table's "Value" column and type a new value in the text box that appears.
The default value is 10. With that value, Firefox waits 10 seconds before displaying a timeout message.
Type a larger number to increase the delay time.

Step 5

Click "OK."

Taken from: http://smallbusiness.chron.com/make-firefox-wait-longer-time-out-41249.html

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