function openLOWindow(URLtoOpen) 
{
	
	if (screen.height <= 480 && screen.width <= 800 )
	{
	  newWindow = window.open(URLtoOpen,'LOWin','height='+(screen.availHeight-20) +',width=700,left=0,top=0,toolbar=no,scrollbars=no');
	}
	else
	{
	  newWindow = window.open(URLtoOpen,'LOWin','height=515,width=770,left=50,top=50,toolbar=no,scrollbars=no');
	}
	pageTracker._trackPageview('/'+URLtoOpen);

}
function openNumberlineWindow(URLtoOpen) 
{
	
	newWindow = window.open(URLtoOpen,'NumberlineWin','height=430,width=790,left=0,top=0,toolbar=no,scrollbars=no');
	pageTracker._trackPageview('/'+URLtoOpen);

}