function getbalk()
{
	var dead = 100;
	var next_parent = parent;
	while( next_parent && (next_parent.frames == null || next_parent.frames.balk == null) && dead-- > 0)
	{
		next_parent = next_parent.parent;
	}
	if (next_parent) return next_parent.frames.balk;
	else return null;
}

function updateLastContentReq()
{
	var balk = getbalk();
	if (balk)
	{
		balk.lastContentReqUrl = document.location.href;
	}	
}