var scrollSpeed = 4;
var step=100;
var current = 0;
var imageWidth = 1120;
var windowWidth;
var start;
var stopPosition;
var stoparea;
var restartPosition;
var currentPhoto = 0;


var photos = ["01.jpg","09.jpg","02.jpg","10.jpg","03.jpg","04.jpg","05.jpg","06.jpg","07.jpg","08.jpg"];
var links = ["/oferta/", "/o-firmie/", "/marketing-pr/", "/edetailing/" , "/e-marketing/", "/multimedia/", "/marketing-uslug-prawniczych/", "/pharma-social-media-marketing/", "/internet-design/", "/reklama-otc/"];

function scrollBg(){
	
	
	
	
	
	windowWidth = $(window).width();
	
	flyOut();

	
	
	
	
	
	
}

function changeBg()
{
	if(currentPhoto > photos.length-2){
		currentPhoto = 0;
	}
	else
	{
		currentPhoto+=1;
	}
	$('.book').css("background-image","url('wp-content/themes/twentyten/images/"+photos[currentPhoto]+"')");
	
	
	$('.book').css("background-position",windowWidth+"px 0px");
	
	$('.book_link').attr('href', links[currentPhoto]);
	
	flyIn();
	
}


function flyIn(){

	centerImagePX = (windowWidth/2)-(imageWidth/2);
	
	$('.book').animate(
	{backgroundPosition: centerImagePX+'px 0px'},
	500);
}

function flyOut(){


	$('.book').animate(
	{backgroundPosition: -(windowWidth)+'px 0px'},
	500,
	function(){
	
		changeBg();
	});

}


var auto;

function startAuto() {
	auto = setInterval('scrollBg()', 5000);
	//scrollBg();
}

function stopAuto(){
	clearInterval(auto);
}


$(function(){

	stopAuto();	
	$('.book').css("background-position","center 0px");
	$('.book').css("background-image","url('wp-content/themes/twentyten/images/"+photos[0]+"')");
	startAuto();
	

});