[Moo] How do I replace Function create from MooTools 1.2 to 1.3?

[websam]

Hi there i have this code snippet I need to get working with MooTools
1.3 :

this.fn = function (e, cal) {
    var e = new Event(e);
    var el = e.target;
    var stop = false;

    while (el != document.body && el.nodeType == 1) {
        if (el == this.calendar) { stop = true; }
        this.calendars.each(function (kal) {
            if (kal.button == el || kal.els.contains(el)) { stop =
true; }
        });

        if (stop) {
            e.stop();
            return false;
        }
        else { el = el.parentNode; }
    }
    this.toggle(cal);
}.create({
             'arguments': cal,
             'bind': this,
             'event': true
        }); <-- THIS CREATE METHOD DOES NOT WORK

Can someone help me whit this ?