Hi: I update my question and make a simple example, Please take a look this example:http://jsfiddle.net/mbwwg/
Suppose the name of the task is "Task1",it belog to Department2,and it own two tasksteps(step01 and step02). And the operators of step1 contain "jhon" and "bill",while the step02 contain "bill" and "susan".Also there are other attributes. The user can modfiy the project name,group of the project,and the name,status of its tasks. Also he can add or remove the operator of one task. So, I can just read the attribute to page,but I do not know how to submit the updated information to the server side when a user make some modifination.
