function getDocHeight(doc)
{
  var docHt = 0, sh, oh;
  if (doc.height) docHt = doc.height;
  else if (doc.body) {
    if (doc.body.scrollHeight) docHt = sh = doc.body.scrollHeight;
    if (doc.body.offsetHeight) docHt = oh = doc.body.offsetHeight;
    if (sh && oh) docHt = Math.max(sh, oh);
  }
  return docHt;
}

function setIframeHeight(iframeName)
{
  var iframeWin = window.frames[iframeName];
  var iframeEl = document.getElementById? document.getElementById(iframeName): document.all? document.all[iframeName]: null;
  if ( iframeEl && iframeWin ) {
    iframeEl.style.height = "auto"; // helps resize (for some) if new doc shorter than previous
    var docHt = getDocHeight(iframeWin.document);
    // need to add to height to be sure it will all show
    if (docHt) iframeEl.style.height = docHt + 30 + "px";
  }
}

function toggleDiv(id)
{
    myDiv = getElementById(id);
    myDiv.style.visibility = (myDiv.style.visibility=='visible') ? 'hidden':'visible';
}

function getElementById(id)
{
	var element = null;

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

	return null;
}