Add javascript to Out of the box Modal Dialogue Box in Sharepoint 2010.

Hi,

We have Sharepoint and Project Server 2010 SP-2 enviroment. We are using Project Server Timesheet for our managing Time logging.

Project Server 2010 has "Add existing task" Modal Dialogue box in which I want to add "Javascript" code in order to sort the Project Server Timesheet Line Claasification listbox control in Ascending order.

As you can see from below screenshot "Standard" the Out of the box timesheet line classification is coming at top and then our custom line classification coming.

But I want to sort this list in ascending order so that this "Standard line classification can come at the bottom of the listbox control.

Please suggest me how can I achieve this.

Thanks much !!!

Sachin Vashishth MCTS