Script Summary: Shows driving directions from home to cache.
Adds an additional map link to the list of available maps on a cache page. The link will show driving directions from your home (or whatever location you've set) to the street location nearest to the cache.
When first run, it will ask for a label for the link (such as "My home"), and the latitude and longitude of that location. If at any time you wish to change any of those setting, use the Tools/User Script Commands option, and you will be allowed to enter new values. You will need to refresh the page to see the changed.