$(document).ready(function(){
	/* This code is executed after the DOM has been completely loaded */
	
	var totWidth=0;
	var positions = new Array();
		current = 1,
		changeEvery = 4,
		itvl = null;
	
	$('#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 */

	$('#Slidemenu 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'},950);
			/* Start the sliding animation */
			
			//get current data
			current = (pos + 1);
			if(current === (positions.length)){
				current = 0;
			}

			e.preventDefault();
			/* Prevent the default action of the link */
			
			// Stopping the auto-advance if an icon has been clicked:
			if(!keepScroll && itvl){
				clearInterval(itvl);
	
				itvl = setInterval(function(){
					autoAdvance()
				}, (changeEvery * 1000));
			}
			
	});
	
	$('#Slidemenu ul li.menuItem:first').addClass('act').siblings().addClass('inact');
	/* On page load, mark the first thumbnail as active */
	
	
	
	 /*****
	 *
	 *	Enabling auto-advance.
	 *
	 ****/
	 
	
	function autoAdvance(){
		
		if(current === -1){
			return false;
		}
		
		$('#Slidemenu ul li a').eq(current).trigger('click',[true]);

	}

	// [true] will be passed as the keepScroll parameter of the click function on line 28
	
	itvl = setInterval(function(){
		autoAdvance()
	}, (changeEvery * 1000));
	/* End of customizations */
});