// Apple Slideshow Gallery
// http://tutorialzine.com/2009/11/beautiful-apple-gallery-slideshow/
// Created: 2009-11-01 by Martin Angelov
// Revised: 2011-03-18 by Thomas Grant

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

			// On a thumbnail click
			$('li.menu-item').removeClass('active').addClass('inactive');
			$(this).parent().addClass('active');
			
			var pos = $(this).parent().prevAll('.menu-item').length;

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

			// Prevent the default action of the link
			e.preventDefault();
						
			// Stopping the auto-advance if an icon has been clicked:
			if(!keepScroll) clearInterval(itvl);
	});

	// On page load, mark the first thumbnail as active
	$('#slide-menu ul li.menu-item:first').addClass('active').siblings().addClass('inactive');
	

// Auto-advance

	var current = 1;
	function autoAdvance() {
    if(current == -1) return false;
		
		$('#slide-menu ul li a').eq(current%$('#slide-menu ul li a').length).trigger('click',[true]);	// [true] will be passed as the keepScroll parameter of the click function on line 29
		current++;
	}

	// The number of seconds that the slider will auto-advance in
	var changeEvery = 10;

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

});