// Gallery script.
which_image_loaded = 0;
// The php tag writes the number of images in the directory.
NUMBER_OF_IMAGES = 23;

ImageNames = new Object();
ImageNames.length = NUMBER_OF_IMAGES - 1;

for (counter = 0; counter < NUMBER_OF_IMAGES; counter++){
    file_number = counter + 1;
    filename = ("images/gallery/gallery" + file_number + ".jpg");
    ImageNames[counter] = filename;
}

function changeImage(direction) {
    which_image_loaded += direction;
    if (which_image_loaded < 0)
        which_image_loaded = NUMBER_OF_IMAGES - 1;
    if (which_image_loaded == NUMBER_OF_IMAGES)
        which_image_loaded = 0;
	if (document.images) {
		if (document.getElementById('gaScreenshot').filters) {
			document.getElementById('gaScreenshot').style.filter="blendTrans(duration=1)";
			document.getElementById('gaScreenshot').filters.blendTrans(duration=0).Apply();
			document.getElementById('gaScreenshot').filters.blendTrans.Play();
		}
        document.gaScreenshot.src = ImageNames[which_image_loaded];
	}
}