树形菜单较滑动菜单稍微复杂一点。其主要难点在于从简洁的数据描述来产生便于操纵的html结构。 本例用来展示树形菜单的编写。使用无线表格，算法上采用了递归，理论上可构造无穷分制枝的树。 本代码可自由扩散。,tree menu than sliding menu a little more complicated. The main difficulty lies in concise descr iption of the data to generate the html easy manipulation of the structure. The cases used to display the menu tree prepared. The use of wireless form, the algorithm used by recursive, theoretically infinite structure of the points system sticks of trees. The proliferation of free code.