$(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 */

	$('#slider-menu ul li span').hover(
		function(e,keepScroll){
			$('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);
			e.preventDefault();
			clearInterval(itvl);
			itvl = null;
		},
		function(e,keepScroll){
			
		}
	
	);
	$('#slider-menu').hover(
		function(){
			if(itvl){
				clearInterval(itvl);
				itvl = null;
			}
		},
		function(){
			itvl = setInterval(function(){autoAdvance(0)},changeEvery*500);
		}
	)
	
	$('#slider-menu ul li').bind('custom',function(e,keepScroll){
		
			/* On a thumbnail click */

			$('li.menuItem').removeClass('act').addClass('inact');
			$(this).addClass('act');
			
			var pos = $(this).prevAll('.menuItem').length;
			
			$('#slides').stop().animate({marginLeft:-positions[pos]+'px'},450);
			/* Start the sliding animation */
			
			e.preventDefault();
//			if(!keepScroll) clearInterval(itvl);
	});

	
	$('#slider-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(status)
	{
		if(status == 0){
			if(current==-1) return false;
			
			$('#slider-menu ul li span').eq(current%$('#slider-menu ul li').length).trigger('custom',[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 = 10;

	itvl = setInterval(function(){autoAdvance(0)},changeEvery*500);

	/* End of customizations */
});