Avete bisogno di un componente albero? jsTree dovrebbe fare al caso vostro.
Ecco le caratteristiche principali:

• Various data sources:
  • predefined HTML - convert nested lists into a tree on the fly
  • JSON - provide a json object
  • XML - provide a nested structure or a flat (id -> parent_id) one
• Async loading - just provide an URL and the tree will request data as needed (works for XML & JSON sources)
• Open, close, rename, create, delete nodes (all with definable rules)
• Various callbacks (onchange, oncreate, ondelete, onload, etc …)
• Drag & drop support (definable with rules)
• Multiple select
• Localization - maintain the same tree in as many languages as you like
• Right-to-left support
• Easy CSS customization of icons, dots, background, fonts & sizes
• Animated open & close (configurable)
• Optional keyboard navigation
• multitree support - move/copy nodes form to tree to tree (definable with rules)

Buon utilizzo!