nextImage() function

private function nextImage(mouseEvent:MouseEvent):void
		{
			//WHEN YOU CLICK TO THE NEXT IMAGE ARROW, REMOVES THE CURRENT IMAGE, AND LOADS THE NEXT IMAGE IN THE xml.image TAG BY ADDING 1 TO THE currentImg VARIABLE, IF currentImg EQUALS THE VALUE OF lastImg IT SETS ITS VALUE TO 0 (TO GO TO THE FIRST IMAGE ON THE GALLERY (TO START OVER), ALL THIS IS DONE WITH THE CONDITIONAL. ALSO PLACES THE ARROWS IN PLACE AGAIN FOR THE NEXT IMAGE LOADED.
			imgLoader.unload();
			currentImg = (currentImg < lastImg) ? currentImg + 1 : 0;
			loadImages();
			
			arrowRightSquare.x = 20;
			arrowRightSquare.y = imgLoader.height / 2 - 40;
			arrowLeftSquare.x = -20;
			arrowLeftSquare.y = imgLoader.height / 2 - 40;
		}