$(document).ready(function ()
{
	/* This code is executed after the DOM has been completely loaded */

	var totWidth = 0;
	var positions = new Array();

	$('#slides .slide').each(function (i)
	{

		/* Traverse through all the slides and store their accumulative widths in totWidth */

		positions[i] = totWidth;
		totWidth += $(this).width();

		/* The positions array contains each slide's commulutative offset from the left part of the container */

		if (!$(this).width())
		{
			alert("Please, fill in width & height for all your images!");
			return false;
		}

	});

	$('#slides').width(totWidth);

	/* Change the cotnainer div's width to the exact width of all the slides combined */

	$('#menu ul li a').click(function (e, keepScroll)
	{

		/* On a thumbnail click */

		$('li.menuItem').removeClass('act').addClass('inact');
		$(this).parent().addClass('act');

		var pos = $(this).parent().prevAll('.menuItem').length;

		$('#slides').stop().animate({ marginLeft: -positions[pos] + 'px' }, 450);
		/* Start the sliding animation */

		e.preventDefault();
		/* Prevent the default action of the link */


		// Stopping the auto-advance if an icon has been clicked:
		if (!keepScroll)
		{
			clearInterval(itvl);
			current = pos + 1;	//next index
			itvl = setInterval(function () { autoAdvance() }, changeEvery * 1000);
		}
	});

	$('#menu ul li.menuItem:first').addClass('act').siblings().addClass('inact');
	/* On page load, mark the first thumbnail as active */



	/*****
	*
	*	Enabling auto-advance.
	*
	****/

	var current = 1;
	function autoAdvance()
	{
		if (current == -1) return false;

		$('#menu ul li a').eq(current % $('#menu ul li a').length).trigger('click', [true]); // [true] will be passed as the keepScroll parameter of the click function on line 28
		current++;
	}

	// The number of seconds that the slider will auto-advance in:

	var changeEvery = 5;

	var itvl = setInterval(function () { autoAdvance() }, changeEvery * 1000);

	/* End of customizations */
});