function loading(event) {
	
	$('sub_img').setStyle({opacity: 0});
	
}
function loadeD(event) {
	
	var fade = new Effect.Opacity('sub_img', { from: 0, to: 1, duration: 0.5, transition: Effect.Transitions.sinoidal });
	
}

function updater() {
	  
	  var tag = $('updater');
	  
	  var img = tag.readAttribute('name');
	  var strana = tag.readAttribute('class');
	  
	  var img = ++img;
	  if(img>14) {var img = 1}
  
		new Ajax.Updater('sub_img', '/img.loader.php', {
		    method: 'get',
			parameters: { img:img, strana:strana },
			onCreate: loading()
		 });
		
		
}
	
function addObservers() {
	$('sub_img').setStyle({opacity: 0});
	new PeriodicalExecuter(updater, 5);

}

Event.observe(window, 'load', addObservers);