Board Thread:Support Requests - Getting Technical/@comment-3271569-20130614071900/@comment-3271569-20130615151849

So:
 * Default = Thumb3
 * If:
 * td#thumb2-activator >>
 * Check active (remove active class)
 * add class thumb 2
 * If out TR#dc-navbox-header >> Return to default
 * td#thumb1-activator >>
 * Check active (remove active class)
 * add class thumb 1
 * If out TR#dc-navbox-header >> Return to default
 * td#thumb0-activator >>
 * Check active (remove active class)
 * add class thumb 0
 * If out TR#dc-navbox-header >> Return to default

TR#dc-navbox-header