How to make Collapse jQuery or Collapse Bootstrap multiple level?

[libpro]

My ability of English is not good, now I have a problem is I want to make a menu collapse jQuery or coolapse bootstrap that have a multiple rank or multiple level (>2 or >3 level) sush as a picture below but I don't know how to do it, so I need a guide, link direction, or instruction to make a reference, thank all very much :

[niche]

This might help:

 

http://stackoverflow.com/questions/17460116/expand-and-collapse-a-div-using-javascript

[libpro]

Thank for advice, I will read it.