$(function() {


var totalPanels			= $(".scrollContainer").children().size();


var regWidth			= $(".panel").css("width");


var regImgWidth			= $(".panel img").css("width");


var regTitleSize		= $(".panel h2").css("font-size");


var regParSize			= $(".panel p").css("font-size");


var movingDistance	    	= 300;


var curWidth			= 350;


var curImgWidth			= 326;


var curTitleSize		= "20px";


var curParSize			= "15px";



var $panels				= $('#slider .scrollContainer > div');


var $container			= $('#slider .scrollContainer');



$panels.css({'float' : 'left','position' : 'relative'});


$("#slider").data("currentlyMoving", false);


$container
		

.css('width', ($panels[0].offsetWidth * $panels.length) + 100 )


.css('left', "-410px");

	var scroll = $('#slider .scroll')

.css('overflow', 'hidden');

	function returnToNormal(element)

{
		$(element)


.animate({ width: regWidth })


.find("img")


.animate({ width: regImgWidth })


.end()


.find("h2")


.animate({ fontSize: regTitleSize })


.end()


.find("p")

.animate({ fontSize: regParSize });
	};
	
	function growBigger(element) {
		$(element)
			
.animate({ width: curWidth })
			

.find("img")
			
.animate({ width: curImgWidth })
		    
.end()
			

.find("h2")
			
.animate({ fontSize: curTitleSize })
			
.end()
			

.find("p")
			
.animate({ fontSize: curParSize });
	}


//direction true = right, false = left
	function change(direction) {

//if not at the first or last panel
		if((direction && !(curPanel < totalPanels)) || (!direction && (curPanel <= 1))) { return false; }	
        
        
//if not currently moving
        if (($("#slider").data("currentlyMoving") == false)) {
            
			$("#slider").data("currentlyMoving", true);
			
			var next         = direction ? curPanel + 1 : curPanel - 1;
			var leftValue    = $(".scrollContainer").css("left");
			var movement	 = direction ? parseFloat(leftValue, 10) - movingDistance : parseFloat(leftValue, 10) + movingDistance;
		
			$(".scrollContainer")
				.stop()
				.animate({
					"left": movement
				}, function() {
					$("#slider").data("currentlyMoving", false);
				});
			
			returnToNormal("#panel_"+curPanel);
			growBigger("#panel_"+next);
			
			curPanel = next;
			
			//remove all previous bound functions
			$("#panel_"+(curPanel+1)).unbind();	
			
			//go forward
			$("#panel_"+(curPanel+1)).click(function(){ change(true); });
			
            //remove all previous bound functions															
			$("#panel_"+(curPanel-1)).unbind();
			
			//go back
			$("#panel_"+(curPanel-1)).click(function(){ change(false); }); 
			
			//remove all previous bound functions
			$("#panel_"+curPanel).unbind();
		}
	}
	
	// Set up "Current" panel and next and prev
	growBigger("#panel_3");	
	var curPanel = 3;
	
	$("#panel_"+(curPanel+1)).click(function(){ change(true); });
	$("#panel_"+(curPanel-1)).click(function(){ change(false); });
	
	//when the left/right arrows are clicked
	$(".right").click(function(){ change(true); });	
	$(".left").click(function(){ change(false); });
	
	$(window).keydown(function(event){
	  switch (event.keyCode) {
			case 13: //enter
				$(".right").click();
				break;
			case 32: //space
				$(".right").click();
				break;
	    case 37: //left arrow
				$(".left").click();
				break;
			case 39: //right arrow
				$(".right").click();
				break;
	  }
	});
	
});