// SET THIS VARIABLE FOR DELAY, 1000 = 1 SECOND
var delayLength = 8000;
var activePanel = 1;	
function doMove(panelWidth, tooFar) {
  	/*if (activePanel==0)
  	{
     		activePanel=1;
   	}*/
//	activePanel=activePanel+1;
	++activePanel;
	var leftValue = $("#mover").css("left");
	
	// Fix for IE
	if (leftValue == "auto") { leftValue = 0; };
	
	var movement = parseFloat(leftValue, 10) - panelWidth;
	
	if (movement <= tooFar) {
	  	activePanel=1;
	  	$(".slide div.slide_bg").animate({
			"top": -350
		});
		$(".slide img").animate({
			"top": -350
		}, function() {
			$("#mover").animate({
				"left": 0
			}, function() {
				$(".slide img").animate({
					"top": 0
				});
				$(".slide div.slide_bg").animate({
					"top": 0
				});
			});
		});
	}
	else {
	  	
	  	$(".slide div.slide_bg").animate({
			"top": -650
		});
		$(".slide img").animate({
			"top": -550
		}, function() {
			$("#mover").animate({
				"left": movement
			}, function() {
				$(".slide img").animate({
					"top": 0
				});
				$(".slide div.slide_bg").animate({
					"top": 0
				});
			});
		});
	}
	var num="#"+activePanel;
	$(num).addClass("active_link");
	if (activePanel==1)num="#"+$(".slide").length;
	else num="#"+(activePanel-1);
	$(num).removeClass("active_link");
	//alert(num);
	
}

$(function(){
	
    var $slide1 = $("#slide-1");

	var panelWidth = $slide1.css("width");
	var panelPaddingLeft = $slide1.css("paddingLeft");
	var panelPaddingRight = $slide1.css("paddingRight");

	panelWidth = parseFloat(panelWidth, 10);
	panelPaddingLeft = parseFloat(panelPaddingLeft, 10);
	panelPaddingRight = parseFloat(panelPaddingRight, 10);

	panelWidth = panelWidth + panelPaddingLeft + panelPaddingRight;
	
	var numPanels = $(".slide").length;
	var tooFar = -(panelWidth * numPanels);
	var totalMoverwidth = numPanels * panelWidth;
	$("#mover").css("width", totalMoverwidth);

	$("#slider").append('<a href="#" id="slider-stopper">Stop</a>');

	sliderIntervalID = setInterval(function(){
		doMove(panelWidth, tooFar);
	}, delayLength);
	
	$("#slider-stopper").click(function(){
		if ($(this).text() == "Stop") {
			clearInterval(sliderIntervalID);
			activePanel=0;
		 	$(this).text("Start");
		}
		else {
			sliderIntervalID = setInterval(function(){
				doMove(panelWidth, tooFar);
			}, delayLength);
		 	$(this).text("Stop");
		}
		 
	});
	$("#next").click(function()
	{
   		clearInterval(sliderIntervalID);
   		doMove(panelWidth, tooFar);
		   sliderIntervalID = setInterval(function(){
				doMove(panelWidth, tooFar);
			}, delayLength);	
 	});
 	$("#prev").click(function()
	{
   		clearInterval(sliderIntervalID);
   		doback(panelWidth, tooFar);
		   sliderIntervalID = setInterval(function(){
				doMove(panelWidth, tooFar);
			}, delayLength);	
 	});
 	$(".number a").click(function()
	{
	  	
	  	var sel=$(this).attr("id");
   		clearInterval(sliderIntervalID);
   		go(panelWidth, tooFar, sel);
		  /* sliderIntervalID = setInterval(function(){
				doMove(panelWidth, tooFar);
			}, delayLength);*/	
 	});
 	

});


function doback(panelWidth, tooFar) {
  	/*if (activePanel==0)
  	{
     		activePanel=1;
   	}*/
	
	var leftValue = $("#mover").css("left");
	// Fix for IE
	if (leftValue == "auto") { leftValue = 0; };
	
	var movement = parseFloat(leftValue, 10) + panelWidth;
	if (movement > 0) {
	  	activePanel=1;
	  	$(".slide div.slide_bg").animate({
			"top": -650
		});
		$(".slide img").animate({
			"top": -650
		}, function() {
			$("#mover").animate({
				"left": tooFar+movement
			}, function() {
				$(".slide img").animate({
					"top": 0
				});
				$(".slide div.slide_bg").animate({
					"top": 0
				});
			});
		});
	}
	else {
	  	
	  	$(".slide div.slide_bg").animate({
			"top": -650
		});
		$(".slide img").animate({
			"top": -550
		}, function() {
			$("#mover").animate({
				"left": movement
			}, function() {
				$(".slide img").animate({
					"top": 0
				});
				$(".slide div.slide_bg").animate({
					"top": 0
				});
			});
		});
	}
	var num="#"+activePanel;
	$(num).removeClass("active_link");
	activePanel=activePanel-1;
	if (activePanel==0){num="#"+$(".slide").length;activePanel=4;}
	else num="#"+activePanel;
	$(num).addClass("active_link");

	
}


function go(panelWidth, tooFar, sel) {
  	/*if (activePanel==0)
  	{
     		activePanel=1;
   	}*/
	var leftValue = $("#mover").css("left");
	
	// Fix for IE
	if (leftValue == "auto") { leftValue = 0; };
	
	var movement = parseFloat(leftValue, 10) - panelWidth;
	movement=-((panelWidth*sel)-panelWidth);
	var compare=""+movement+"px";
	if (leftValue!=compare)
	{
	
	  	
	  	$(".slide div.slide_bg").animate({
			"top": -650
		});
		$(".slide img").animate({
			"top": -550
		}, function() {
			$("#mover").animate({
				"left": movement
			}, function() {
				$(".slide img").animate({
					"top": 0
				});
				$(".slide div.slide_bg").animate({
					"top": 0
				});
			});
		});
		var num="#"+sel;
		$(num).addClass("active_link");
	 	num="#"+activePanel;
		$(num).removeClass("active_link");
		activePanel=sel;
	}
	
}