Listbox click event

Am not a javascript programmer, but am trying to modify a script 'Searcher' from the forum.
double clicking an entry in the listbox will toggle it on/off, I would like instead to single left click in the listbox.
Found some relevant info here

  • dblclk: An item in the list was double-clicked (list box, combo box or list view) or the control was double-clicked (static control with Notify Clicks property enabled).
  • rclick: An item in the list was right-clicked (list box, list view) or the control was right-clicked (static control with Notify Clicks property enabled).

lclick and click do not work for listboxes.
help appreciated.

See Rclick event in a listbox