fill for top down nodes in new d3 layout
fill for top down nodes in new d3 layout

sylvanmist/Web-Karma,usc-isi-i2/Web-Karma,usc-isi-i2/Web-Karma,sylvanmist/Web-Karma,usc-isi-i2/Web-Karma,rpiotti/Web-Karma,sylvanmist/Web-Karma,rpiotti/Web-Karma,rpiotti/Web-Karma,sylvanmist/Web-Karma,rpiotti/Web-Karma,usc-isi-i2/Web-Karma,sylvanmist/Web-Karma,usc-isi-i2/Web-Karma,rpiotti/Web-Karma