// ------------------------------------------ fce pro rotaci promo boxu
var id_foto=1;
	
function stop_promo(){
	clearTimeout(casovac)
}
	
function switch_promo(id,end,pocet){
	if (end==2) {stop_promo(); }
	
	for(i=1; i<=pocet; i++) {
	 	 i_id="promo_"+i;
	     document.getElementById(i_id).className = "hidden";
		 document.getElementById(i_id+"_on").className = "hidden";
		 document.getElementById(i_id+"_off").className = "";
	}
	document.getElementById("promo_"+id).className = "promo_image";
	document.getElementById("promo_"+id+"_on").className = "";
	document.getElementById("promo_"+id+"_off").className = "hidden";
}
	
function rotate_promo(id_foto,control,pocet){
	if (id_foto==pocet) {id_foto=0;}
	id_foto=id_foto+1;
	if (control!=0) {
		casovac=window.setTimeout("rotate_promo("+id_foto+","+control+","+pocet+")", 4000); // volá sebe samu odloženou o sekundu
		switch_promo(id_foto,0,pocet);
	}
}