###First:
http://paradite.github.io/d3-experiment/index.html
###Second:
http://paradite.github.io/d3-experiment/index2.html
Single click to select, double click to collapse and expand
###First:
http://paradite.github.io/d3-experiment/index.html
###Second:
http://paradite.github.io/d3-experiment/index2.html
Single click to select, double click to collapse and expand