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 resizeIframe(iframeName) {
  var iframeWin = parent.parent.window.frames[iframeName];
  var iframeEl = parent.parent.document.getElementById? parent.parent.document.getElementById(iframeName): parent.parent.document.all? parent.parent.document.all[iframeName]: null;
  if ( true /*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 + 0 + "px";
  }
}

function loadIframe(iframeName, url) {
  if ( window.frames[iframeName] ) {
    window.frames[iframeName].location = url;   
    return false;
  }
  else return true;
}

function loadParentIframe(iframeName, url) {
  if ( parent.window.frames[iframeName] ) {
    parent.window.frames[iframeName].location = url;   
    return false;
  }
  else return true;
}