jquery.fancytree/demo/ajax-tree-dom.json

Fancytree is a JavaScript tree view plugin for jQuery with support for persistence, keyboard, checkboxes, drag'n'drop, and lazy loading.

[
	{"title": "html", "expanded": true, "folder": true, "children": [
		{"title": "head", "folder": true, "children": [
			{"title": "meta"},
			{"title": "title"}
		]},
		{"title": "body", "expanded": true, "folder": true, "children": [
			{"title": "ul", "expanded": true, "children": [
				{"title": "li"},
				{"title": "li"}
			]},
			{"title": "h1"},
			{"title": "h2", "expanded": true, "children": [
				{"title": "a"}
			]}
		]}
	]}
]