function loop(div,id,pause,count){
	var elementold=document.getElementById(div+'-'+(id+count-1)%count);
	if (elementold) {
	    elementold.style.display="none";
	}
	var element=document.getElementById(div+'-'+(id+count)%count);
	if (element) {
	    element.style.display="block";
	}
	setTimeout(function(){loop(div,(id+1)%count,pause,count);},pause);
  }