[Action Script] array of URL and next / previous button question May,2012

So i got and array of URLs called imagesURL and var index associated with it...And i got buttons for example Next, that reffers to imageButtonsActions function.
Everything works fine, when i press next it load next url with var index:int = index++; command, but after last image i got output error:
Quote: TypeError: Error #2007: Parameter url can not be equal zero.
at flash.display::Loader/_load()
at flash.display::Loader/load()
at _fla::MainTimeline/loadImage()
at _fla::MainTimeline/imageButtonsActions() Question is - why the hell? As far as i understand i haven't said that url = 0, i have said that array index = 0. so it must understand it like 1st array item, ain't it?

I want to start URL over from index 0, by just assigning index to var index:int = 0; , so it would start over from 0...It seem that i'm doning something wrong!
if (index == imagesURL.length) {
//var index:int = 0;
}

Any ideas?
Help is highly appreciated!

ActionScript Code: // create an array of URLsvar imagesURL:Array = [    "gallery/picture0.jpg",    "gallery/picture1.jpg",    "gallery/picture2.jpg",    "gallery/picture3.jpg",    "gallery/picture4.jpg",    "gallery/picture5.jpg"];// start URL count from 0var index:int = 0;// create new loadervar loaderImages:Loader = new Loader();// create containervar images:MovieClip = new MovieClip();// function that loads imagefunction loadImage():void {    //define image URL    var imagesURLreq:URLRequest = new URLRequest(imagesURL[index]);    // load image URL in loader    loaderImages.load(imagesURLreq);    // create listener so it would only execute loadNow function AFTER image is fully loaded    loaderImages.contentLoaderInfo.addEventListener(Event.COMPLETE, loadNow);    // set gallery loaded flag    galleryIsLoaded = true;}function loadNow(e:Event):void {    loaderImages.contentLoaderInfo.removeEventListener(Event.COMPLETE, loadNow);    // add loader inside image container    images.addChild(loaderImages);    // create a border around image    images.graphics.drawRect(0, 0, imgLoaderW, imgLoaderH);    // add border    addChild(images);    setChildIndex(images, numChildren - 2);}
+

ActionScript Code: function imageButtonsActions(e:MouseEvent):void {    if (index < imagesURL.length) {        //load new image        var index:int = index++;    }    if (index == imagesURL.length) {        var index:int = 0;    }    removeChild(images);    trace("index:" + index.valueOf());    loadImage();}
array of URL and next / previous button question

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