Script Summary: adds a link to Geocaching.org on OpenStreetMap
License: MIT License; http://www.opensource.org/licenses/mit-license.php
Adds a link to Geocaching.org in the tab menu on the top.
There is an option to specify via the Greasemonkey Commands if the link should open in a new window or the same window. Also the link itself can be modified via the Greasemonkey commands, with place holders for the coordinates and the zoom.