too many nodes in juggl view

[farrellyuan]

As it is shown by pcitures.
problem: I have too manys up direction and down direction，so every time i open breadcrumb juggl view,there is too many nodes in juggl view。
Suggestion: a new default set of maximun nodes shown in juggl view （then show more node if i want to see more node)

[farrellyuan]

solution:i change the jscode and success in limiting maximum ring number to 3
PS：maximum ring number to 3=i only see current node's grandson'son node