div_nr = 3;
function set(id) {

  for(i=1;i<=div_nr;i++) {
  	obj = document.getElementById(i);
  	obj.style.visibility = "visible";
	pag = document.getElementById("nr_"+i);
	pag.style.background = "none";
  }
  for(i=1;i<=div_nr;i++) {
  	obj = document.getElementById(i);
  	i != id ? obj.style.visibility = "hidden" : '';
	if(i==id) {
	  pag = document.getElementById("nr_"+i);
	  pag.style.background = "url(imagini/list.png) no-repeat center top";
	}
  }
}
k = 0;
time = 4000;
function init(id) {
	k == div_nr ? k = 0 : '';
	set(id);
	setTimeout("init("+((k++)+1)+")",time);
} 
function settimp() {
	time = 4000;
}