var curPanel;
function initCarousel(currentPanel) 
{
	var totalPanels			= $(".scrollContainer").children().size();
	var regWidth			= $(".panel").css("width");
	var regImgWidth			= $(".panel img").css("width");
	var regTitleSize		= $(".panel h2").css("font-size");
	var regInsideHeight     = $(".inside").css("height");
	
	var movingDistance	    = 257;
	
	var curWidth			= 250;
	var curImgWidth			= 220;
	var curTitleSize		= "20px";
	var curInsideHeight     = 345;

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

	$panels.css({'float' : 'left','position' : 'relative'});
    
	$("#slider").data("currentlyMoving", false);

	$container
		.css('width', ($panels[0].offsetWidth * ($panels.length+2)) + 100 )
		//.css('left', (240 - 257*(curPanel-1))+"px");
		.css('left', (240 - 257*(curPanel))+"px");

	var scroll = $('#slider .scroll').css('overflow', 'hidden');
	
	function returnToNormal(element) 
	{
		$(element)
			.animate({ marginTop: 43 })
			.find(".inside")
			    .animate({ height: regInsideHeight })
			.find("img")
				.animate({ width: regImgWidth })
		    .end()
			.find("h2")
				.animate({ marginLeft: 32 })
				.animate({ fontSize: regTitleSize })
			.end()
			.find("p")
				.fadeOut()
			.end();
	};
	
	function growBigger(element) 
	{
		$(element)
			.animate({ marginTop: 0 })
			.find(".inside")
			    .animate({ height: curInsideHeight })
			.find("img")
				.animate({ width: curImgWidth })
		    .end()
			.find("h2")
				.animate({ marginLeft: 0 })
				.animate({ fontSize: curTitleSize })
			.end()
			.find("p")
				.fadeIn()
			.end();
	}

	//direction true = right, false = left
	function change(direction) 
	{   
	    //if not at the first or last panel
		//if((direction && !(curPanel < totalPanels-2)) || (!direction && (curPanel <= 1))) { return false; }
				
        //if not currently moving
        if (($("#slider").data("currentlyMoving") == false)) 
		{
        	
    		if(direction && !(curPanel < totalPanels-2)){ initCarousel(0);}
    		if(!direction && (curPanel < 2)){initCarousel(totalPanels-1);}

        	$("#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); });
			
			//update linear navigation
			$("#linear-navigator > li").removeClass();
			$("#nav_"+(curPanel+1)).toggleClass("item-sel");
			
            //remove all previous bound functions															
			$("#panel_"+(curPanel-1)).unbind();
			
			//go back
			$("#panel_"+(curPanel-1)).click(function(){ change(false); }); 

			//update linear navigation
			$("#linear-navigator > li").removeClass();
			$("#nav_"+(curPanel-1)).toggleClass("item-sel");
			
			//remove all previous bound functions
			$("#panel_"+curPanel).unbind();
		}
	}
	
	for (i = 0; i <= totalPanels; i++)
	{
		if (i == curPanel)
			growBigger("#panel_"+curPanel);
		else
			returnToNormal("#panel_"+i);
	}

	$("#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;
	  }
	});
};