$(document).ready(function(){
	var next = $('#gal-next');
	var prev = $('#gal-prev');
	var cnt = $('#gal-cnt');
	var list = $('#gal-list');

	var width = cnt.width();
	var max = width * list.children('ul').length;
	var pos = 0;
	
	list.width(max);
	for (var i = 0; i < list.children('ul').length; i ++)
		$('.part-'+i+' a').lightBox();
	
	var test = function()
	{
		next.css('opacity', pos < max - width ? 1 : 0.3);
		prev.css('opacity', pos > 0 ? 1 : 0.3);
	}
	
	next.click(function(){
		if (pos < max - width)
		{
			pos += width;
			list.animate({"margin-left": "-="+width+"px"}, "slow");
		}
		test();
    });

	prev.click(function(){
		if (pos > 0)
		{
			pos -= width;
			list.animate({"margin-left": "+="+width+"px"}, "slow");
		}
		test();
    });
	test();
	
	$('.art a').lightBox();
});