Refer to parent clip after IO_ERROR

1

In a for loop Im adding loaders to differnt mc’s on the scene* (map1, map2, map3 etc)*, now I want to addlisteners but I have problems refering to their parent, anyone see what Im doing wrong?

The 2 funtions at the bottom gives me errors (I did a missing file on purpose to test)

for (var i:Number = 0; i<aantal; i++) {
        var map:MovieClip = root["map"+i];
        var imgLader:Loader = new Loader();
        imgLader.contentLoaderInfo.addEventListener(ProgressEvent.PROGRESS, preloading); //doesnt work
        imgLader.contentLoaderInfo.addEventListener(Event.COMPLETE, preloadKlaar);       //works fine
        imgLader.contentLoaderInfo.addEventListener(IOErrorEvent.IO_ERROR, kwijt);       //doesnt work

        imgLader.load(new URLRequest(container.dir.attribute('mapthumb')*));
        map.addChildAt(imgLader, 1);
    }
}


function preloading(event:ProgressEvent):void{
    //I need to refer back to the parent here,
    // should be smth like "map1 or map2 or map3 etc.."
}

function kwijt(event:IOErrorEvent):void{
    //I need to refer back to the parent here,
    // should be smth like "map1 or map2 or map3 etc.."     
}

thx in advance!