Im using an extension of the combobox (superboxselect), and am trying to call onTriggerClick when the control gets focused. Requirement is to do an all query when the control gets focused.. Problem is that when I call the function, I get an error : "this.list is null or not an object" in the expand function of the control(which is overridden in superboxselect). Im stuck up here, because other functions are calling the same function and it works perfectly! Help!