var oPopup = window.createPopup();

function showSubmenu(menuName)
{
  subMenu.innerHTML = document.all["mn_"+menuName].innerHTML;
}

function resetMenu()
{
  document.images["bt_home"].src="image/bt_home0.gif";
  document.images["bt_about"].src="image/bt_about0.gif";
  document.images["bt_business"].src="image/bt_business0.gif";
  document.images["bt_qa"].src="image/bt_qa0.gif";
  document.images["bt_newsroom"].src="image/bt_newsroom0.gif";
  document.images["bt_contact"].src="image/bt_contact0.gif";
  subMenu.innerHTML = mn_empty.innerHTML;
}

function setiframeSize() {
	var  iframeHeight;
		
	var iframeElement = document.getElementById('content'); 
	
	if (screen.height == 600)
		iframeElement.style.height = 230;
	else if (screen.height == 768)
		iframeElement.style.height = 340;
	else if (screen.height == 864)
		iframeElement.style.height = 430;
	else if (screen.height == 960)
		iframeElement.style.height = 530;
	else if (screen.height == 1024)
		iframeElement.style.height = 600;
	else if (screen.height == 1050)
		iframeElement.style.height = 620;
	else 
		iframeElement.style.height = (screen.height - 240) * 0.6;
}