Because some scripts may take an excessive amount of time to run, Internet Explorer prompts the user to decide whether they would like to continue running the slow script. Some tests and benchmarks may use scripts that take a long time to run and may want to increase the amount of time before the message box appears. In Internet Explorer, the script time-out value can be changed on specific client machines by modifying a registry entry
Affects all Internet Explorer editions
This article is based on a Microsoft KB 175500.For more information please visit the below given link.
The link contains an automated fix it solution which works only in IE