public/javascripts/yui/event/event-debug.js
function(e) {
                        return fn.call(context, YAHOO.util.Event.getEvent(e, el), 
                                obj);
                    }
function(e) {
                        return fn.call(context, YAHOO.util.Event.getEvent(e, el), 
                                obj);
                    }
function ( e ) { return fn . call ( context , YAHOO . util . Event . getEvent ( e , el ) , obj ) ; }
wrap the function so we can return the obj object when the event fires;
wrap the function so we can return the obj object when the event fires ;