var element={
  e: null,
  get: function(id) {
    if (document.getElementById) this.e=document.getElementById(id)
    else if (document.all) this.e=document.all[id]
    else if (document.layers) this.e=document.layers[id];
    return this.e;
  },
  add: function(pe,html) {
    var e=document.createElement('div');
    e.innerHTML=html;
    pe.appendChild(e);
  },
  substitute: function(pe,html) {
    var e=document.createElement('div');
    e.innerHTML=html;
    pe.parentNode.replaceChild(e,pe);
  }
}