This page contains few plugins that have something to do with Subsearch.
Mozilla Firefox (2.0+) ja Internet Explorer (7.0+)
Subsearch can be added to Mozilla Firefox and Internet Explorer by clicking here
Quicksearch in Firefox
You can add Subsearch to Opera by doing the following:
1. Click the right mouse button on the searchbox.
2. Select "Create Search..."
3. Set "ss" as keyword and click OK
4. Now you can search subtitles in the following ways in Opera:
Search with addressbar in Opera
Quicksearch in Opera