function plato(arg) {
  var rslt;
  if (document.getElementById) rslt = document.createElement('img');
  else rslt = new Image();
  rslt.src = arg;
  return rslt;
}
 
function changeImages() { 
  if (loadedjs && preloadFlag) { 
    for (var i=0; i<changeImages.arguments.length; i+=2) {
      document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
    }
  }
} 

function preloadImages() { 
  var imgFiles = preloadImages.arguments; 
  for (var i=0; i<imgFiles.length; i+=2) { 
    window[imgFiles[i]] = plato(imgFiles[i+1]);
    window[imgFiles[i]].src = imgFiles[i+1]; 
  } 
  preloadFlag = true; 
}

preloadImages('ptbsupport','/images/navigation/toolbar/support_over.gif',
              'ptbdownload','/images/navigation/toolbar/download_over.gif',
              'ptbcontact','/images/navigation/toolbar/contact_us_over.gif'
              ); 

function syncText(id, newClass) {
  if (document.getElementById) {
    document.getElementById(id).className = newClass;
  }
}

function openWindow(url, name) {
  popupWin = window.open(url, name, 'scrollbars=yes,resizable=yes,status=no,personal=no,menu=no,location=no,toolbar=no,left=20,top=20,width=770,height=500')
}

//useage: put each parameter in single quotes example: openSizedWindow('http://www.mercuryinteractive.com','myName','400','500');
function openSizedWindow(url, name, myHeight, myWidth) 
{
 popupWin = window.open(url, name, 'scrollbars=yes,resizable=yes,status=no,personal=no,menu=no,location=no,toolbar=no,left=20,top=20,width=' +myWidth+',height='+myHeight+'');
}

function openSizedWindowPlain(url, name, myHeight, myWidth) 
{
 popupWin = window.open(url, name, 'scrollbars=no,resizable=no,status=no,personal=no,menu=no,location=no,toolbar=no,left=20,top=20,width=' +myWidth+',height='+myHeight+'');
}

function openSizedWindowUI(url, name, myHeight, myWidth) 
{
 popupWin = window.open(url, name, 'scrollbars=yes,resizable=yes,status=yes,personal=no,menubar=yes,location=yes,toolbar=yes,left=20,top=20,width=' +myWidth+',height='+myHeight+'');
}

showMenu = function () {}

hideMenu = function () {}

var loadedjs = true;