function preload() {
  if (document.images) {
  Open = new Image(16,10);
  Closed = new Image(13,10);
  Open.src = "images/menu/folderopen.gif";
  Closed.src = "images/menu/folder.gif";
  }
}

function showhide(what,what2,folder,folderopen) {
  if (what.style.display=='none') {
  what.style.display = '';
  what2.src = "images/menu/" + folder + ".gif";
  } else {
  what.style.display = 'none';
  what2.src = "images/menu/" + folderopen + ".gif";
  }
}

function show_hide_low(what2) {
  if (what2.style.display=='none') {
  what2.style.display = '';
  } else {
  what2.style.display = 'none';
  }
}


function reloadurl(kam) {
  parent.frames['iframe_main'].location.href = kam;
}

function preloader() {
  loading.style.display = 'none';
}