$(function() {
	
	var totalPanels			= $(".scrollContainer").children().size();
		
	var regWidth			= $(".panel").css("width");
	var regImgWidth			= $(".panel img").css("width");
    var regImgHeight        = $(".panel img").css("height"); 
	var regTitleSize		= $(".panel a").css("font-size");
	//var regParSize			= $(".panel p").css("font-size");
	
	var movingDistance	    = parseInt($("#movingDistance").val());
	var curWidth			= parseInt($("#curWidth").val());      
	var curImgWidth			= parseInt($("#curImgWidth").val());      
    var curImgHeight        = parseInt($("#curImgHeight").val());
    var movingDistance      = parseInt($("#movingDistance").val());      
	var curTitleSize		= $("#curTitleSize").val();      
	//var curParSize			= "15px";

	var $panels				= $('#slider .scrollContainer > div');
	var $container			= $('#slider .scrollContainer');
    var widthContainer      = ($panels[0].offsetWidth * $panels.length) + 80;
    widthContainer = widthContainer > 530 ? widthContainer : 530; 
    
	$panels.css({'float' : 'left','position' : 'relative'});
    
	$("#slider").data("currentlyMoving", false);
    
    //
    var moveSide        = $("#moveSide").val();
    var moveContainer   = Math.floor((totalPanels / 2) -1);
    if (moveContainer <= 0) moveContainer = 0.5;
    moveContainer = (moveContainer * $panels[0].offsetWidth) + 40;
    if (moveSide == 'right')
	   $container.css({'width':widthContainer, 'right' : moveContainer});
    else
       $container.css({'width':widthContainer, 'left' : moveContainer});
		//.css('left', "200px");

	var scroll = $('#slider .scroll').css('overflow', 'hidden');

	function returnToNormal(element) {
		$(element)
			.animate({ width: regWidth })
			.find("img")
			.animate({ width: regImgWidth, height: regImgHeight })
		    .end()
			.find("a")
			.animate({ fontSize: regTitleSize })
			//.end()
			//.find("p")
			//.animate({ fontSize: regParSize });
	};
	
	function growBigger(element) {
		$(element)
			.animate({ width: curWidth })
			.find("img")
			.animate({ width: curImgWidth, height: curImgHeight })
		    .end()
			.find("a")
			.animate({ fontSize: curTitleSize })
			//.end()
			//.find("p")
			//.animate({ fontSize: curParSize });
	}
	
	//direction true = right, false = left
	function change(direction) {
	   
	    // last panel
		//if((direction && !(curPanel < totalPanels))) {
        //    curPanel = 1; 
        //    growBigger("#panel_1"); 
        //    return false; 
        // }
        
        //first panel
       // if (!direction && (curPanel <= 1)) {
       //     curPanel = totalPanels; 
       //     growBigger("#panel_" + totalPanels);  
       //     return false;
       // }   
        
        //if not currently moving
        if (($("#slider").data("currentlyMoving") == false)) {
            
			$("#slider").data("currentlyMoving", true);
			
            var leftValue    = $(".scrollContainer").css("left");      
            
            // last panel   
            if((direction && !(curPanel < totalPanels))) { 
                var next         = 1;
                var movement     = parseFloat(leftValue, 10) + (movingDistance * (totalPanels - 1)); 
            }else if((!direction && (curPanel <= 1))) { 
                var next         = totalPanels;
                var movement     = parseFloat(leftValue, 10) - (movingDistance * (totalPanels - 1)); 
            }else{    
			    var next         = direction ? curPanel + 1 : curPanel - 1;
			    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;
   
    var curPanel = Math.round((totalPanels / 2));
   
    growBigger("#panel_"+curPanel);
   
	
	$("#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;
	  }
	});
	
});