Array Question is AS3

programming flash
1

Okay I wrote this code for my class project assignment, now I have to modify it so I have a next button which works fine but I need to modify it so that I have a previous button that will click backwards through the array.

Here is my code any help would be appreciated!

Thanks!

// start code here is the code

stop();

var pepsiArray: Array = [“pepsi_images/1_PEPSI.jpg”,
“pepsi_images/2_PEPSI.jpg”,
“pepsi_images/3_PEPSI.jpg”,
“pepsi_images/4_PEPSI.jpg”,
“pepsi_images/5_PEPSI.jpg”,
“pepsi_images/6_PEPSI.jpg”];

var count = 0;

var imageLoader: Loader = new Loader();
addChild(imageLoader);

var imageRequest: URLRequest = new URLRequest(pepsiArray[count]);

imageLoader.x = 0;
imageLoader.y = 0;
imageLoader.load(imageRequest);

function imageLoad(pEvent:MouseEvent):void{

++count;

if (count == pepsiArray.length)
{
    count = pepsiArray.length-1;
}

else

{
    imageLoader.unload();
    
    imageRequest.url = pepsiArray[count];
    imageLoader.x = 0;
    imageLoader.x = 0;
    imageLoader.load(imageRequest);
}

}

btn_next.addEventListener(MouseEvent.CLICK, imageLoad);

// end code here