ns4 = document.layers;
ie4 = document.all;
nn6 = document.getElementById && !document.all;

function showObject() {
   if (ns4) {
     document.TipLayer.visibility = "show";
  }
  else if (ie4) {
     document.all['TipLayer'].style.visibility = "visible";
  }
  else if (nn6) {
     document.getElementById('TipLayer').style.visibility = "visible";
  }
}

function hideObject() {
   if (ns4) {
     document.TipLayer.visibility = "hide";
  }
  else if (ie4) {
     document.all['TipLayer'].style.visibility = "hidden";
  }
  else if (nn6) {
     document.getElementById('TipLayer').style.visibility = "hidden";
  }
}

function showReindex() {
   if (ns4) {
     document.reindex.visibility = "show";
  }
  else if (ie4) {
     document.all['reindex'].style.visibility = "visible";
  }
  else if (nn6) {
     document.getElementById('reindex').style.visibility = "visible";
  }
}