又一例jQuery多级菜单特效，类似树形菜单的jquery多级展开下拉菜单，示例中的下拉菜单没有过多美化，主要是演示菜单的代码生成，点击文字，文字所属的二级菜单会下拉出来-Another example of jQuery multi-level menu effects, jquery multi-level tree-like menu to expand the drop-down menu, the drop-down menu in the example is not too much landscaping the demo menu code generation, click on the text, the text belongs to secondary menu will drop down out