public JsonResult ChangeCollectingPoint(string cp)
{
Employee emp = EmployeeData.FindByUserName((string)Session["username"]);
Department dep = DepartmentData.GetDepById(emp.department.Id);
DepartmentData.SetColPoint(dep.Id, cp);
object new_amount = new { cp = cp };
return(Json(new_amount, JsonRequestBehavior.AllowGet));
}