If the SELV website doesn't reflect recent code changes, clear the cache and , any associated offline cached files, and Index DB.
On firefox:
- From Firefox menu, select Preferences
Click Advanced
Click Network
Click both of the Clear Now buttons
2. Delete files in index.db
/Users/{USER}/Library/Application Support/Firefox/Profiles/{PROFILE}/indexedDB on OS X and should be C:\Users\{USER}\AppData\Roaming\Mozilla\Firefox\Profiles\{PROFILE} on Windows.
For additional details see: http://stackoverflow.com/questions/9846013/how-to-view-indexeddb-content-in-firefox