Here’s how to add the events with jQuery:
I’ve tried to modify Joe’s patch into a plugin so that it can run without modifying Highcharts itself. The result can be seen at http://jsfiddle.net/highcharts/c42Ms/.
I didn’t have time right now to check across browsers, but I’m open for suggestions for improvements.
39 votesJim van Dam commented
Support for small world diagrams would indeed be great. The interactivity of highcharts would be excellent for managing social networks, word relationships, etc..