function do_image_gallery() {
		
		if ( imageGalleryArray.length > 0 ) {
			
			var el = document.getElementById('imageGallery');
			
			if ( el ) {
				
				imageGalleryCount++;
				
				el.src = imageGalleryArray[ imageGalleryCount % imageGalleryArray.length ].src;
				
			}
			
		}
		
	}