function IE4GetElementById(id)
{
  return document.all[id];
}

function NN4GetLayerById(id)
{
  return document.layers[id];
}

function getStyleObject(id)
{
  var elm = null;
  var styleObject = null;

  if (document.layers)
    elm = NN4GetLayerById(id);
  else if (document.all)
    elm = IE4GetElementById(id);
  else
    elm = document.getElementById(id);

  if (elm) {
    if (elm.style)
    styleObject = elm.style;
  else if (document.layers)
    styleObject = elm;
  }

  return styleObject;
}

function showElement(id)
{
  // alert('show');
  var styleObject = getStyleObject(id);

  if (styleObject)
    styleObject.visibility = 'visible';
}

function hideElement(id)
{
  // alert('hide');
  var styleObject = getStyleObject(id);

  if (styleObject)
    styleObject.visibility = 'hidden';
}

function init(docname,menu) {
  if ( docname ) {
    if (top.location.href==self.location.href) {
      top.location.href='/cgi-bin/nph-pro/RELOAD?docname=' + docname + '&menu=' + menu;
    }
  }
}