Im trying to build my dropdown menu using the plugin Chosen for Multiple Select . Here\'s to behavior I\'m based on:
http://jsfiddle.net/JfLvA/
This might be helpful. You have to just trigger an event.
$("#DropDownID").trigger("liszt:updated");
Where "DropDownID" is ID of .
More info here: http://harvesthq.github.com/chosen/