// JavaScript Document

function switchImage(imgName, imgSrc) 
{

  if (document.images)  {
    if (imgSrc != "none")  {
      document.images[imgName].src = imgSrc;
    }
  }

}

function showSubMenu(subId)
{
	// nur bei MenuItem mit der ID = 1 wird das Submenu eingeblendet
	if (subId == 1) {
		document.getElementById('submenu').style.visibility = "visible";
	} else {
		document.getElementById('submenu').style.visibility = "hidden";
	}
}

function hideSubMenu(subId)
{
	if (subId != 1) {
		document.getElementById('submenu').style.visibility = "hidden";
	}
}