$(document).ready(function(){
	setGallery();
});

function setGallery()
{
    $("ul.product_gallery").prettyGallery({
	itemsPerPage : 2,
	navigation : 'none',
	previous_item_selector: '#gallery_previous',
	next_item_selector: '#gallery_next',
	gotopage_item_selector: '#gotopage'
    });
}