function popup_img(url, title)
{
  var preload_elem = document.createElement('div');
  preload_elem.innerHTML = '<div id="preload_container"><div id="preload_content"><img src="images/img/loader.gif" alt="загрузка..."/>Подождите...</div></div>';
  preload_elem.id = 'preloader_div';
  document.body.appendChild(preload_elem);

  img = '<h1>'+title+'</h1><img src="'+url+'" alt="'+title+'" style="cursor:pointer;" onclick="elem = document.getElementById(\'wrapper_popup\'); document.body.removeChild(elem);" name="popupImg" id="popupImg" onLoad="resizePopup();"/>';

  var new_elem = document.createElement('div');
  new_elem.innerHTML = img;
  new_elem.id = 'wrapper_popup';
  style = "visibility: hidden";
  new_elem.setAttribute("style", style);
  document.body.appendChild(new_elem);
}

function resizePopup()
{
  var img = document.images["popupImg"];
  elem = document.getElementById('wrapper_popup');

  elem.style.margin = '-' + (img.height/2+40) + 'px' + ' 0 0 -' + img.width/2 + 'px'

  preload_elem = document.getElementById('preloader_div');
  document.body.removeChild(preload_elem);

  elem.style.visibility = 'visible';
}