// Determine browser.

var isMinNS4 = (navigator.appName.indexOf("Netscape") >= 0 && parseFloat(navigator.appVersion) >= 4) ? 1 : 0;
var isMinNS6 = (isMinNS4 && navigator.userAgent.indexOf("Gecko")>=0) ? 1 : 0;
var isMinIE4 = (document.all) ? 1 : 0;
var isMinIE5 = (isMinIE4 && navigator.appVersion.indexOf("5.")) >= 0 ? 1 : 0;
var isDOM = (document.getElementById) ? 1 : 0;

function getLayer(name) {
  if (isDOM)
    return document.getElementById(name);
  if (isMinNS4)
    return findLayer(name, document);
  if (isMinIE4)
    return eval('document.all.' + name);
  return null;
}

function findLayer(name, doc) {

  var i, layer;
  for (i = 0; i < doc.layers.length; i++) {
    layer = doc.layers[i];
    if (layer.name == name)
      return layer;
    if (layer.document.layers.length > 0) {
      layer = findLayer(name, layer.document);
      if (layer != null)
        return layer;
    }
  }
  return null;
}

function setLayerText(name, message) {
	if (document.layers) {
		document.layers[name].document.close();
		document.layers[name].document.write(message);
		document.layers[name].document.close();
	} else {
		if (document.all) {
			eval("document.all." + name + ".innerHTML='" + message + "'");
		} else {
			document.getElementById(name).innerHTML = message;
		}
	}
}