$(document).ready(function(){
  var currentPosition = 0;
  var slideWidth = 975;
  var slides = $('.slide');
  var numberOfSlides = slides.length;
  var sliderIsOn = 1;

  createSlideCounter(numberOfSlides);
  
  // 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('<span class="control" id="leftControl">Clicking moves left</span>')
    .append('<span class="control" id="rightControl">Clicking moves right</span>');

  // 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') ? parseInt(currentPosition+1) : parseInt(currentPosition-1);
	// Hide / show controls
    manageControls(currentPosition);
    // Move slideInner using margin-left
    $('#slideInner').animate({
      'marginLeft' : slideWidth*(-currentPosition)
    });
    // sliderIsOn=0;
  });

  
  $(".slideNo")
	.bind('click', function(){
	// Determine new position
	currentPosition = parseInt($(this).attr('no'));
	// Hide / show controls
	manageControls(currentPosition);
	// Move slideInner using margin-left
	$('#slideInner').animate({
	  'marginLeft' : slideWidth*(-currentPosition)
	});
	
	// sliderIsOn=0;
  });
  
  // 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() }
    
    $('.slideNo').css({"font-weight":"normal"});
    $('#slideNo_' + position).css({"font-weight":"bold"});
  }	
  
  function createSlideCounter(numberOfSlides){
  	  for (i=numberOfSlides-1;i>=0;i--){
		$('.slidesCounter').append('<div id="slideNo_'+ i +'" no="'+ i +'" class="slideNo"><a href="#" style="color: #000; text-decoration:none;">'+ (i+1) + '</a></div>');
	  }
  }
  
  function showSlides(){
  	if (sliderIsOn==1){
  		if (currentPosition<numberOfSlides-1){
	  		currentPosition++;
	  	}else{
	  		currentPosition=0;
	  	}
	  	// Hide / show controls
		manageControls(currentPosition);
		// Move slideInner using margin-left
		$('#slideInner').animate({
		  'marginLeft' : slideWidth*(-currentPosition)
		});
  	}
  }
  
  function showRandom(){
  	currentPosition=0;//Math.floor(Math.random()*(numberOfSlides-1));
  	// Hide / show controls
		manageControls(currentPosition);
		// Move slideInner using margin-left
		$('#slideInner').css({
		  'marginLeft' : slideWidth*(-currentPosition)
		});
  }
  
  showRandom();
  setInterval( showSlides, 10000 );
});