$(document).ready(function(){

	/* This code is executed after the DOM has been completely loaded */

	

	var totWidth=0;

	var positions = new Array();

	

	$('.slides_news .slide_news').each(function(i){

		

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

		

		positions[i]= totWidth;

		totWidth += $(this).width() + 177;

		

		/* 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_news').width(totWidth);



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



	$('.menu_news ul li a').click(function(e){



			/* On a thumbnail click */



			$('li.menuItem_news').removeClass('act').addClass('inact');

			$(this).parent().addClass('act');

			

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

			

			$('.slides_news').stop().animate({marginLeft:-positions[pos]+'px'},450);

			/* Start the sliding animation */

			

			e.preventDefault();

			/* Prevent the default action of the link */

	});

	

	$('.menu_news ul li.menuItem_news:first').addClass('act').siblings().addClass('inact');

	/* On page load, mark the first thumbnail as active */

	

	

	

	/*****

	 *

	 *	Auto-advance customization, added after the tutorial was released

	 *

	 ****/

	 

	var current=1;

	function autoAdvance()

	{

		if(current==-1) return false;

		

		$('.menu_news ul li a').eq(current%$('.menu_news ul li a').length).click();

		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 */

});