// Zugriff auf Objekte mit verschiedenen Browsern

function objarten() {
  return (document.layers || document.all || document.getElementById)
}

function objzugriff (id) {
  if (document.layers)
    return document.layers[id];
  else if (document.all)
    return document.all[id];
  else if (document.getElementById)
    return document.getElementById(id);
}

function objstyle(id) {
  if (document.layers)
    return objzugriff(id);
  else if (document.layers || document.getElementById)
    return objzugriff(id).style
}

function objhide(id) {
  if (objarten())
    objstyle(id).visibility = "hidden";
}

function objshow(id) {
  if (objarten())
    objstyle(id).visibility = "visible";
}

function objtext(id, text){
  if (objarten())
    if (document.layers)
      with (document.layers[id].document) {
        open();
        write(text);
        close();
      }
    else
      objzugriff(id).innerHTML = text;
}