var current_picture_index = 0;
var interval_id = 0;
var cleared = false;

function nextPicture()
{
	clearTimer();
	loadPicture(++current_picture_index);
}

function prevPicture()
{
	clearTimer();
	loadPicture(--current_picture_index);
}

function clearTimer(){
	if (!cleared){
		clearInterval(interval_id);
		cleared=true;
	}
}

function loadPicture(index)
{
	current_picture_index = index;
	if (current_picture_index >= product_images.length) current_picture_index = 0;
	if (current_picture_index < 0) current_picture_index = product_images.length - 1;
	
	$("#home_gallery .image img").attr('src', product_images[current_picture_index]);
	$("#home_gallery .image img").attr('alt', product_names[current_picture_index]);
	$("#home_gallery .text .title").text(product_names[current_picture_index]);
	$("#home_gallery .text .description").text(product_cats[current_picture_index]);
}