主要是用Dtree.js做的一个树形结构，有利于大家都学习和共同进步。用到了数据库，主要有Student和Class两张表，通过Class可以动态的获得Student的信息-Dtree.js is mainly used to do a tree structure is conducive to all learning and common progress. Use a database, there are Student and Class 2 form, through the Cl

小型的一个简单的系统开发的实现了简---添加--删除--修改---（vs2005和SQl2005）用到了一些JS脚本，采用可以---折叠的树形菜单-A simple small-scale systems development implementation of the Jane--- add- delete- modify--- (vs2005 and SQl2005) used some JS scr ipt, using the tree could collapse menu---