$(function() {

//remove js-disabled class
$("#viewer").removeClass("js-disabled");

//create new container for images
$("<div>").attr("id", "container").css({ position:"absolute"}).width($(".wrapper").length * 100).height(75).appendTo("div#viewer");

//add images to container
$(".wrapper").each(function() {
	$(this).appendTo("div#container");
});

//work out duration of anim based on number of images (1 second for each image)
var duration = $(".wrapper").length * 3000;

//store speed for later (distance / time)
var speed = (parseInt($("div#container").width()) + parseInt($("div#viewer").width())) / duration;
				
//set direction
var direction = "rtl";

//set initial position and class based on direction
(direction == "rtl") ? $("div#container").css("left", $("div#viewer").width()).addClass("rtl") : $("div#container").css("left", 0 - $("div#container").width()).addClass("ltr") ;

//animator function
var animator = function(el, time, dir) {
 
	//which direction to scroll
	if(dir == "rtl") {
	  
	  //add direction class
		el.removeClass("ltr").addClass("rtl");
			
		//animate the el
		el.animate({ left:"-" + el.width() + "px" }, time, "linear", function() {
								
			//reset container position
			$(this).css({ left:$("div#imageScroller").width(), right:"" });
			
			//restart animation
			animator($(this), duration, "rtl");
			
			//hide controls if visible
			($("div#controls").length > 0) ? $("div#controls").slideUp("slow").remove() : null ;			
							
		});
	} else {
	
	  //add direction class
		el.removeClass("rtl").addClass("ltr");
	
		//animate the el
		el.animate({ left:$("div#viewer").width() + "px" }, time, "linear", function() {
								
			//reset container position
			$(this).css({ left:0 - $("div#container").width() });
			
			//restart animation
			animator($(this), duration, "ltr");
			
			//hide controls if visible
			($("div#controls").length > 0) ? $("div#controls").slideUp("slow").remove() : null ;			
		});
	}
}

//start anim
animator($("div#container"), duration, direction);

//pause on mouseover
$("a.wrapper").live("mouseover", function() {
  
	//stop anim
	$("div#container").stop(true);
	
	//show controls
	($("div#controls").length == 0) ? $("<div>").attr("id", "controls").appendTo("div#outerContainer").css({ opacity:0.7 }).slideDown("slow") : null ;
	($("a#rtl").length == 0) ? $("<a>").attr({ id:"rtl", href:"#", title:"rtl" }).appendTo("#controls") : null ;
	($("a#ltr").length == 0) ? $("<a>").attr({ id:"ltr", href:"#", title:"ltr" }).appendTo("#controls") : null ;
	
	//variable to hold trigger element
	var title = $(this).attr("title");
	
	//add p if doesn't exist, update it if it does
	($("p#title").length == 0) ? $("<p>").attr("id", "title").text(title).appendTo("div#controls") : $("p#title").text(title) ;
});

//restart on mouseout
$("a.wrapper").live("mouseout", function(e) {
  
	//hide controls if not hovering on them
	(e.relatedTarget == null) ? null : (e.relatedTarget.id != "controls") ? $("div#controls").slideUp("slow").remove() : null ;
	
	//work out total travel distance
	var totalDistance = parseInt($("div#container").width()) + parseInt($("div#viewer").width());
										
	//work out distance left to travel
	var distanceLeft = ($("div#container").hasClass("ltr")) ? totalDistance - (parseInt($("div#container").css("left")) + parseInt($("div#container").width())) : totalDistance - (parseInt($("div#viewer").width()) - (parseInt($("div#container").css("left")))) ;
	
	//new duration is distance left / speed)
	var newDuration = distanceLeft / speed;

	//restart anim
	animator($("div#container"), newDuration, $("div#container").attr("class"));

});
								
//handler for ltr button
$("#ltr").live("click", function() {
					
	//stop anim
	$("div#container").stop(false);

	//swap class names
	$("div#container").removeClass("rtl").addClass("ltr");
						
	//work out total travel distance
	var totalDistance = parseInt($("div#container").width()) + parseInt($("div#viewer").width());
	
	//work out remaining distance
	var distanceLeft = totalDistance - (parseInt($("div#container").css("left")) + parseInt($("div#container").width()));
	
	//new duration is distance left / speed)
	var newDuration = distanceLeft / speed;
	
	//restart anim
	animator($("div#container"), newDuration, "ltr");
});

//handler for rtl button
$("#rtl").live("click", function() {
						
	//stop anim
	$("div#container").stop(true);
	
	//swap class names
	$("div#container").removeClass("ltr").addClass("rtl");
	
	//work out total travel distance
	var totalDistance = parseInt($("div#container").width()) + parseInt($("div#viewer").width());

	//work out remaining distance
	var distanceLeft = totalDistance - (parseInt($("div#viewer").width()) - (parseInt($("div#container").css("left"))));
	
	//new duration is distance left / speed)
	var newDuration = distanceLeft / speed;

	//restart anim
	animator($("div#container"), newDuration, "rtl");
});
});