var pastObject = null;
function ChangeClass(e,sClass)
{
	e.className=sClass;
	try{
	e.childNodes.item(0).className = sClass;
	}catch(ex){}
}
function GoTo(sURL)
{
	document.location.href = sURL;	
}
function ShowItem(itemID)
{
	HideOld();
	var o = document.getElementById(itemID);
	o.style.display = 'block';
	pastObject = o;
}
function HideOld()
{
	if (pastObject !=null)
	{
		pastObject.style.display = 'none';
	}
}