树形图(菜单)构建组建dhtmlXTree

官方地址：http://www.dhtmlx.com/docs/products/dhtmlxTree/index.shtml

可以使用如下几种格式来构建树

loadCSV - loads tree from csv file|stream

loadCSVString - loads tree from csv string

loadJSArray - loads tree from js array object

loadJSArrayFile - loads tree from js array file|stream

loadJSON - loads tree from json file

loadJSONObject - loads tree from json object

loadOpenStates - restores open nodes from cookie

loadState - loads tree from cookie

loadXML - loads tree from xml file

loadXMLString - loads tree from xml string

具体用法可以到时在google查询或看官方的demo