I am trying to add the functionality of driving directions to my map but I am at a loss on how to implement it. When I try to incorporate the driving directions code into the rest of my javascript the directions don't show up.
If anyone has some advice on how to fix this problem I would greatly appreciate it.
Also its a Drupal based website.
Have a look at the docu, you can find some samples there:
http://code.google.com/intl/en/apis/maps/documentation/examples/directions-simple.html code.google.com/intl/en/apis/maps/documentation/examples/directions-advanced.html
Your question is very unclear. You say you have added the javascript code, but the driving directions UI doesn't show up in your map. Have you made sure the changed javascript has been downloaded to your browser? Try flushing Drupal's cache and your browser's.
Without more information I have nothing else to suggest.