Hello, Here is my code snippt. But the code is breaking after inner for loop. But getting no error message. Any idea?

Thanks.

    var lastnames   = document.getElementsByClassName('box_nachname');
    var firstnames      = document.getElementsByClassName('box_vorname');
    var teilnehmer  = document.getElementsByClassName('select');
    observers = [];

    // iterate over nachname array.
    for (var i = 0; i < lastnames.length; i++) {

        // Create an observer instance.
        observers[i] = new Observer();


        // Subscribe oberser object.
        for(idx in teilnehmer) {
            if(teilnehmer[idx].id.split("_")[0].toLowerCase() !== "zl") {
                var anynum = function(element) {
                                             observers[i].subscribe(element, updateTeilnehmerSelectbox);
                                         }(teilnehmer[idx]);
            }
        }


        //on blur the Observer fire the updated info to all the subscribers.
        var anynumNachname = function(j, element, value, observer) {
                                            cic.addEvent(lastnames[j], 'blur', observer.fire(element, value));
                                            } (i, lastnames[i], lastnames[i].value, observers[i]);
        cic.addEvent(firstnames[i], 'blur', function(element, value, observer) {observer.fire(element, value)}(lastnames[i], lastnames[i].value, observers[i]));

    }