//Galeria
$(document).ready(function(){
  var currentPosition = 0;
  var slideWidth = 650;
  var slides = $('.slide');
  var numberOfSlides = slides.length;

  // 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);


 

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

  // Create event listeners for .controls clicks
  $('.control').click(function(){
    // Determine new position
      currentPosition = ($(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').fadeOut() }
    else{ $('#leftControl').fadeIn() }
    // Hide right arrow if position is last slide
    if(position==numberOfSlides-1){ $('#rightControl').fadeOut() }
    else{ $('#rightControl').fadeIn() }
    }
});