var names = new Array("1","2","3","4","5","6","7","8","9","10","11","12");
 var basepath = "http://sweetmilk.cz/images/chp/";
 var interval = 3*1000;
 var actual = 0;
 var peek = 12;
 function change()
 {
	if(actual == peek)
	{
	    actual = 0;
	}
	document.getElementById("fotecka").src = basepath + names[actual++] + ".jpg";
 }


document.write('<div style="width: 39%; float: right; height: 300px;	margin: 5px;"><img id="fotecka" src="'+basepath+'1.jpg" width="100%"/></div>');
setInterval("change()",interval);