$(document).ready(function(){
  var currentPosition = 0;
  var slideWidth = 220;
  var slideWidth_g = 300;
  var slides = $('.newsite');
  var slides_g = $('.newsite_g');
  var numberOfSlides = slides.length;
  var numberOfSlides_g = slides_g.length;

  // Remove scrollbar in JS
  $('#slidesContainer').css('overflow', 'hidden');
  $('#slidesContainer_g').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
    });
  
  slides_g
  .wrapAll('<div id="slideInner_g"></div>')
  // Float left to display horizontally, readjust .slides width
	.css({
    'float' : 'left',
    'width' : slideWidth_g
  });

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

  // Insert controls in the DOM
  $('#slideshow1')
    .prepend('<span class="control" id="leftControl"></span>')
    .append('<span class="control" id="rightControl"></span>');
  
  $('#slideshow1_g')
  .prepend('<span class="control_g" id="leftControl_g"></span>')
  .append('<span class="control_g" id="rightControl_g"></span>');

  // Hide left arrow control on first load
  manageControls(currentPosition);
  manageControls_g(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)
    });
  });
  
  $('.control_g')
  .bind('click', function(){
  // Determine new position
	currentPosition = ($(this).attr('id')=='rightControl_g') ? currentPosition+1 : currentPosition-1;
  
	// Hide / show controls
  manageControls_g(currentPosition);
  // Move slideInner using margin-left
  $('#slideInner_g').animate({
    'marginLeft' : slideWidth_g*(-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 manageControls_g(position){
	    // Hide left arrow if position is first slide
		if(position==0){ $('#leftControl_g').hide() } else{ $('#leftControl_g').show() }
		// Hide right arrow if position is last slide
	    if(position==numberOfSlides_g-1){ $('#rightControl_g').hide() } else{ $('#rightControl_g').show() }
	  }
  
});