nvd3 library: modify default position of LEGEND BOX THAT AUTOMATICALLY POPS UP WHEN YOU POSITION THE MOUSE IN THE CHART

Question

THIS IS NOT ABOUT THE NORMAL FIXED LEGEND.

I am using using nvd3 library for some charts and I need to modify the default position of the js legends that come up (on the bottom instead of on the right). I cannot find any documentation and tweaking the parameteres Ive seen in the code so far doesnt modify this. Any help would be much appreciated.