To enable local file links in Firefox

Firefox has security settings that by default disable web pages from loading or even linking to files on the local computer. You can change these settings by following these steps:

1. Copy these instructions and quit firefox
2. Open or create the file user.js
   • On Linux usually in /home/<user>/.mozilla/firefox/<profile name>/
   • On Windows usually in C:\Documents and Settings\<user>\Application Data\Mozilla\Firefox\Profiles\<profile name>
3. Add the following lines:

   user_pref("capability.policy.policynames", "monsterfinder_local");
   user_pref("capability.policy.monsterfinder_local.sites", "http://monsterfinder.dndrunde.de");
   user_pref("capability.policy.monsterfinder_local.checkloaduri.enabled", "allAccess");
   

4. Save the file and restart Firefox

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