var items = [' <img src="images/img_02.jpg" /> ',' <img src="images/img_03.jpg" /> ',' <img src="images/img_04.jpg" /> ',' <img src="images/img_05.jpg" />',' <img src="images/img_06.jpg" />',' <img src="images/img_07.jpg" />',' <img src="images/img_08.jpg" />',' <img src="images/img_09.jpg" />',' <img src="images/img_10.jpg" />',' <img src="images/img_11.jpg" />', ' <img src="images/img_01.jpg" />'];

zwiastuny = $('zwiastun');
		
var pos = 0;
var max_pos = 11;

		
function zmien()
{
	if (pos < max_pos) {
		pos=pos+1;				
	} else {
		pos = 0;
	}
	//$('zwiastun').fade({ duration: 1.0, from: 1, to: 0 });
	//$('zwiastun').fade({ duration: 3.0, from: 0, to: 1 });	
	//Effect.toggle('zwiastun','appear');
	Effect.Fade('zwiastun', { duration: 1.0, from: 1, to: 0.1, queue: 'front'});
	
//	Effect.Opacity('zwiastun', { from: 1, to: 0, queue: 'front'});
	sleep(500);
	zwiastuny.innerHTML = items[pos];
	Effect.Appear('zwiastun', { duration: 1.0, from: 0.1, to: 1, queue: 'end'});
//	Effect.Opacity('zwiastun', { from: 0, to: 1, queue: 'end'});	
	//Effect.toggle('zwiastun','appear');
}

function uruchom() {
	zwiastuny.innerHTML = items[0];
		setInterval("zmien()", 9000);
};

function sleep(milliseconds) {   
    var start = new Date().getTime();   
           
        for (var i = 0; i < 1e7; i++) {   
        if ((new Date().getTime() - start) > milliseconds) {   
            break;   
    	    }   
	}   
}  

window.onload = uruchom;