Calling a Function inside a Combobox

programming flash
1

I have this script for me Combo Box


function nextImage2() {
    //picture.loadMovie("testimages/image1_big.jpg", 1);
    trace("FUNCTION2");
}

omboBox.addItem({data:"http://www.beispiel.de/tiere", label:"Tiere"});
comboBox.addItem({data:"http://www.beispiel.de/DerIngo", label:"DerIngo"});
comboBox.addItem({data:"http://www.flashforum.de", label:"FlashForum"});
var listener:Object = new Object();
listener.change = function(eventObject:Object) {
var beschriftung = eventObject.target.selectedItem.label;
var wert = eventObject.target.selectedItem.data;
trace(beschriftung+":"+wert);
getURL(wert, "_blank");
};
comboBox.addEventListener("change", listener);

How can call a Function (eg nextImage2() ) instead of an URL???

any help is much appreciated

cheers

ChromeD