Added functionality to the 'Next Question' button.
Added functionality to the 'Next Question' button.
Completes functionality of the Next Question button. Further changes to be implemented: highlighting the node that is currently selected. Current functionality explained in a comment within the file.
Working on Previous Question button.
Merge branch 'Francisco'

Conflicts:
	script.js
Code is broken
Next Question functions. Working on Previous Question
Added some Submit button functionality.
add update position and correct some issues for nextQ, preQ, mouseover
Added score keeping functionality :)
Made questions answered correctly turn green, wrong ones turn red.
fixed minor update color problem, display socre, cleanup and modularize some code