The traditional web based computing system did no support user space multitasking. Therefore, if a task is submitted by a user from a web browser window, the user has to wait the task to be completed before the user can submit another task. Thus a problem associated with the issue of lack of web based user space multitasking will be escalated and become apparent to the user in many instances. For example the web browser window will experience being blocked or hanged and the user can not do anything but wait. A method is disclosed herein for controlling each user initiated task to be run in background of the web based computing system and causing display of the UI again for the user to not wait the completion of said task.