$(document).ready(function(){
  var currentPosition = 0;
  var slideWidth = 600;
  var slideHeight = 180;
  var slides = $('.slide');
  var numberOfSlides = slides.length;
  var dir='left';
  var interval=5000;
  var int;

  // 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
	 
	 if(dir=='left'){
		slides.css({
			'float' : 'left',
			'width' : slideWidth
		 });
	 }else{
		 slides.css({
			'width' : slideWidth
		 });
	 }

  // Set #slideInner width equal to total width of all slides
  if(dir=='left')
  {
 	 $('#slideInner').css('width', slideWidth * numberOfSlides);
  }else{
	  $('#slideInner').css('height', slideHeight * 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
  $('.control')
    .bind('click', function(){nextPos($(this).attr('id'));} );

  // 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 nextPos(flpos){
    // Determine new position
	 
	 if(!flpos){
	 	flpos='rightControl';
	 }else{
		 int=clearInterval(int);
		 int=setInterval(nextPos,interval,"");
	}
	 
	 
	currentPosition = (flpos == 'rightControl') ? currentPosition+1 : currentPosition-1;
	
	if(currentPosition > numberOfSlides-1) currentPosition=0;
    
	// Hide / show controls
    manageControls(currentPosition);
    // Move slideInner using margin-left
	  if(dir=='left')
	  {
		 $('#slideInner').animate({
			'marginLeft' : slideWidth*(-currentPosition)
		 });
	  }else{
		  $('#slideInner').animate({
			'marginTop' : slideHeight*(-currentPosition)
		 });
	  }
    
  }
  
  int=setInterval(nextPos,interval,"");
});