Showcases using a SVG foreignObject to contruct temporary, minimal forms to allow editing of arbitrary D3 data (in this case: titles and subtitles)
** Notes
The code isn't the cleanest that could be: the 'blur' and 'keypress' event handlers share copy&pasted code which could be refactored.
Modified http://mbostock.github.com/d3/d3.v2.js?2.9.1 to a secure url
https://mbostock.github.com/d3/d3.v2.js?2.9.1