I saw once a javascript tool (jquery plugin maybe) to implement feature/guide tour functionality, unfortunately i haven't bookmarked the page.
It used an overlay and focused on document elements, based on id attributes probably.
Joyride or anything i have found googling does not support this.
Do you have anything in mind?
jquerypowertour.com can highlight elements and a lot more. I have not used it, but it seems pretty powerful.
But I think something like the JoyRide or Guiders-JS could easily be modified to do in combination with jQuery Highlighter plugin - Demo