function checkBg()
{
  var ww= $(window).width();
  //alert(ww);
  if(ww<1000)
  {
    $('div.conteiner_up').css({'background-image': 'url(/images/logo_small.png)',"height":"200px"});
    $('body').css('background-image', 'url(/images/bg_1000.jpg)');
  }
    else
  {
    $('div.conteiner_up').css({'background-image': 'url(/images/logo_big.png)',"height":"300px"});
  }
  if(ww<1100 && ww>1000)$('body').css('background-image', 'url(/images/bg_1100.jpg)');
  if(ww<1200 && ww>1100)$('body').css('background-image', 'url(/images/bg_1200.jpg)');
  if(ww<1300 && ww>1200)$('body').css('background-image', 'url(/images/bg_1300.jpg)');
  if(ww<1600 && ww>1300)$('body').css('background-image', 'url(/images/bg_1600.jpg)');
  if(ww<2000 && ww>1600)$('body').css('background-image', 'url(/images/bg_2000.jpg)');
}



function animfly1()
{
  $('ul.animate_fly > li.second').hide();
  $('ul.animate_fly > li.first').show();

  setTimeout('animfly2()',10);
}
function animfly2()
{
  $('ul.animate_fly > li.first').hide();
  $('ul.animate_fly > li.second').show();

  setTimeout('animfly1()',10);
}

function goFly()
{
  $('div.samolet').animate({top:"0px",left:""+$(window).width()+""},30000).fadeOut().animate({top:"500px",left:"-200"},1).fadeIn();
  setTimeout('goFly()',30000);
}