$(document).ready(function(){
  var currentPosition = 0;
  var slideWidth = 640;
  var slides = $('.slide');
  var numberOfSlides = slides.length;

  // Remove scrollbar in JS
  $('#slidesContainer').css('overflow', 'hidden');

  // Wrap all .slides with #slideInner div
  slides
    .wrapAll('<div id="slideInner"></div>')
    // Float left to display horizontally, readjust .slides width
	.css({
      'float' : 'left',
      'width' : slideWidth
    });

  // Set #slideInner width equal to total width of all slides
  $('#slideInner').css('width', slideWidth * numberOfSlides);

  // Insert controls in the DOM
  $('#slideshow')
    .prepend('<a href="#" class="control" id="leftControl" title="Poprzednie">Poprzednie</a>')
    .append('<a href="#" class="control" id="rightControl" title="Następne">Następne</a>');

  // Hide left arrow control on first load
  manageControls(currentPosition);

  // Create event listeners for .controls clicks
  $('.control')
    .bind('click', function(){
    // Determine new position
	currentPosition = ($(this).attr('id')=='rightControl') ? currentPosition+1 : currentPosition-1;

	// Hide / show controls
    manageControls(currentPosition);
    // Move slideInner using margin-left
   $('#slideInner').animate({
    'marginLeft' : slideWidth*(-currentPosition)
    });
  });

  // manageControls: Hides and Shows controls depending on currentPosition
  function manageControls(position){
    // Hide left arrow if position is first slide
	if(position==0){ $('#leftControl').hide() } else{ $('#leftControl').show() }
	// Hide right arrow if position is last slide
    if(position==numberOfSlides-1){ $('#rightControl').hide() } else{ $('#rightControl').show() }
  }
});

function theRotator() {
    $('div.rotator ul li').css({opacity: 0.0});
    $('div.rotator ul li:first').css({opacity: 1.0});
    setInterval('rotate()', 3000);
}

function rotate() {
    var current = ($('div.rotator ul li.show')?  $('div.rotator ul li.show') : $('div.rotator ul li:first'));

    if ( current.length == 0 ) current = $('div.rotator ul li:first');

    var next = ((current.next().length) ? ((current.next().hasClass('show')) ? $('div.rotator ul li:first') :current.next()) : $('div.rotator ul li:first'));

	//Un-comment the 3 lines below to get the images in random order

	//var sibs = current.siblings();
        //var rndNum = Math.floor(Math.random() * sibs.length );
        //var next = $( sibs[ rndNum ] );


    //Set the fade in effect for the next image, the show class has higher z-index
    next.css({opacity: 0.0})
        .addClass('show')
	.animate({opacity: 1.0}, 1000);

	//Hide the current image
    current.animate({opacity: 0.0}, 1000)
	.removeClass('show');
};



$(document).ready(function() {
    theRotator();
    $('div.rotator').fadeIn(1000);
    $('div.rotator ul li').fadeIn(1000); // tweek for IE
});