// JavaScript Document

// JavaScript Document

$(document).ready(function(){
  var currentPosition4 = 0;
  var slideWidth4 = 706;
  var slides4 = $('.slide4');
  var numberOfSlides4 = slides4.length;

  // Remove scrollbar in JS
  $('.slidesContainer4').css('overflow', 'hidden');

  // Wrap all .slides with #slideInner div
  slides4
  .wrapAll('<div class="slideInner4"></div>')
  // Float left to display horizontally, readjust .slides width
  .css({
    'float' : 'left',
    'width' : slideWidth4
  });

  // Set #slideInner width equal to total width of all slides
  $('.slideInner4').css('width', slideWidth4 * numberOfSlides4);

  // Insert left and right arrow controls in the DOM
  $('.slideshow4')
    .prepend('<span class="control4" id="leftControl4">Move left</span>')
    .append('<span class="control4" id="rightControl4">Move right</span>');

  // Hide left arrow control on first load
  manageControls4(currentPosition4);

  // Create event listeners for .controls clicks
  $('.control4')
    .bind('click', function(){
    // Determine new position
      currentPosition4 = ($(this).attr('id')=='rightControl4')
    ? currentPosition4+1 : currentPosition4-1;

      // Hide / show controls
      manageControls4(currentPosition4);
      // Move slideInner using margin-left
      $('.slideInner4').animate({
        'marginLeft' : slideWidth4*(-currentPosition4)
      });
    });

  // manageControls: Hides and shows controls depending on currentPosition
  function manageControls4(position4){
    // Hide left arrow if position is first slide
    if(position4==0){ $('#leftControl4').hide() }
    else{ $('#leftControl4').show() }
    // Hide right arrow if position is last slide
    if(position4==numberOfSlides4-1){ $('#rightControl4').hide() }
    else{ $('#rightControl4').show() }
    }
  });