i = 1;
$(document).ready(function($) {
    /*initCookie();
    backgroundChanger(readCookie('background'));
    setInterval(function(){
	if(i == 4){
	    i = 1;
	}
	$('.banners').removeClass().addClass('banners').addClass('banner'+i);
	i++;
    }, 5000);*/
})

function initCookie(){
    if(readCookie('background') == null){
	createCookie('background',1,365);
    } else {
	if(readCookie('background') < 1){
	    createCookie('background',4,365);
	}
	if(readCookie('background') > 4){
	    createCookie('background',1,365);
	}
    }
}

function backgroundChanger(background){
    createCookie('background',background,365);
    switch(Number(readCookie('background'))){
	case 1:
		$('.content').css('background-position' ,"0px 0px");
	break;
	case 2:
		$('.content').css('background-position' ,"-1024px 0px");
	break;
	case 3:
		$('.content').css('background-position' ,"-2048px 0px");
	break;
	case 4:
		$('.content').css('background-position' ,"-3072px 0px");
	break;
    }
    $('.main-content').removeClass().addClass('main-content').addClass('prozrachno'+readCookie('background'));
    $('.used').load('images/backgrounds/fon'+readCookie('background')+'.html');
}

function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function eraseCookie(name) {
	createCookie(name,"",-1);
}