var k=3;
 	var zmenaa;
	var zmenab;
	 function haluz(hdata){
	 if(hdata=="yes"){
	 k++;
	 ko = k % 3;
	 
	 zmenaa = ko+2;
	 zmenab = ko+1;
	 if(zmenaa==4) zmenaa=1
  
	  change_image('log'+zmenaa,'log'+zmenab, 140);
	 }
	  setTimeout('haluz("yes")', 10000);
	}
 
 
function change_image(numa, numb, speed){
 var i;
var y;
 
 for (i=0;i<11;i++){
	setTimeout('setOpacity('+i+', '+numa+', '+numb+')', speed*i); 
 }
	
for (y=0;y<11;y++){
	 setTimeout('downOpacity('+y+', '+numa+', '+numb+')', speed*y); 
}
 return false;
}

function setOpacity(value, numa, numb)
{
	 numa.style.opacity = value/10;
	 numa.style.filter = 'alpha(opacity=' + value*10 + ')';
	 if(value==1) numa.style.display = "block";	 
}

function downOpacity(valueb, numa, numb)
{	
	  if(valueb==10) numb.style.display = "none";	
	 numb.style.opacity = 1 - (valueb/10);
	 numb.style.filter = 'alpha(opacity=' + (100 - valueb*10) + ')';
	   
}