Tracking Outgoing Links With Google Analytics

Are there any plugins that allow for automatically adding the outgoing link tracking scripts for Google Analytics?

You basically have to add this to any link that you want google to track as an outbound link or a file download:

onClick="javascript:urchinTracker('/outgoing/example_com');"

Is there a plugin that will automatically add this code, or is it more of a hands-on job to add it?