How may I choose one of the "selectable" elements by script ?

How may I choose one of the "selectable" elements by script ?

After I render a table or list with "selectable", I want to select one of the "selectable" rows by javascript.

I haved tried to call 'click' method on the row element, but it takes no effect because click event is prevented by "selectable" control.

If I can choose a row by something likes below, that will be very good.

$("#myID").selectable("select", elem);

But it seems that there is no 'select' method provided by "selectable" control.

Totally, I expect a javascript method that can mimic the mouse 'click' effect to choose one of the "selectable" elements, and the method will trigger "selecting" and "selected" event, not just change the CSS.

So anyone can help me? Thanks very much!