var ap_displayVideo;

$(document).ready(function(){
  var currentPosition = 0;
  var slideWidth = 510;
  var slides = $('.slide');
  var numberOfSlides = slides.length;
  //SETTING UP OUR POPUP
  //0 means disabled; 1 means enabled;
  var popupStatus = 0;
  var popupSelector = 0;

  // 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') ? 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').hide() } else{ $('#leftControl').show() }
	// Hide right arrow if position is last slide
    if(position==numberOfSlides-1){ $('#rightControl').hide() } else{ $('#rightControl').show() }
  }

	//LOADING POPUP
	//Click the button event!
	ap_displayVideo = function(){
		popupSelector = 0;
		//centering with css
		centerPopup();
		//load popup
		loadPopup();		
	}
	
	$(".button").click(function(){
		popupSelector = 1;
		//centering with css
		centerPopup();
		//load popup
		loadPopup();
	});
				
	//CLOSING POPUP
	//Click the x event!
	$(".popupClose").click(function(){
		disablePopup();
	});
	//Click out event!
	$("#backgroundPopup").click(function(){
		disablePopup();
	});
	//Press Escape event!
	$(document).keypress(function(e){
		if(e.keyCode==27 && popupStatus==1){
			disablePopup();
		}
	});
	
	//loading popup with jQuery magic!
	function loadPopup(){
		//loads popup only if it is disabled
		if(popupStatus==0){
			$("#backgroundPopup").css({
				"opacity": "0.7"
			});
			$("#backgroundPopup").fadeIn("slow");
			if(popupSelector==0){
				$("#popupVideo").fadeIn("slow");
			}
			if(popupSelector==1){
				$("#popupList").fadeIn("slow");
			}
			popupStatus = 1;
		}
	}

	//disabling popup with jQuery magic!
	function disablePopup(){
		//disables popup only if it is enabled
		if(popupStatus==1){
			$("#backgroundPopup").fadeOut("slow");
			if(popupSelector==0){
				$("#popupVideo").fadeOut("slow");
			}
			if(popupSelector==1){
				$("#popupList").fadeOut("slow");
			}
			popupStatus = 0;
		}
	}

	//centering popup
	function centerPopup(){
		//request data for centering
		var windowWidth = document.documentElement.clientWidth;
		var windowHeight = document.documentElement.clientHeight;
		var popupHeight = $("#popupVideo").height();
		var popupWidth = $("#popupVideo").width();
		//centering
		if(popupSelector==0){
			$("#popupVideo").css({
				"position": "absolute",
				"top": windowHeight/2-popupHeight/2-30,
				"left": windowWidth/2-popupWidth/2
			});
			//only need force for IE6	
		}
		if(popupSelector==1){
			$("#popupList").css({
				"position": "absolute",
				"top": windowHeight/2-popupHeight/2-30,
				"left": windowWidth/2-popupWidth/2
			});
			//only need force for IE6	
		}

		$("#backgroundPopup").css({
			"height": windowHeight
		});

	}

});