function closeWindow()
{
    window.close();
}

var newwin = null;

function doTour(url)
{
	var screenWidth		=	(screen.width - 600) / 2;
	var screenHeight	=	(screen.height - 400) / 2;

if(newwin==null||newwin.closed)

{
	var winWidth		=	600;
	var winHeight		=	400;

	if(screen.width == 800)
	{
		winWidth  = 600;
		winHeight = 400;
	}

	page = "/meta/ads/hyperspace_tour.html?URL=" + url;

	var screenWidth		=	(screen.width - 600) / 2;
	var screenHeight	=	(screen.height - 400) / 2;
	newwin = window.open(url,"hs_tour","width=600,height=400,left="+screenWidth +",top="+screenHeight +",resizable=no,toolbar=no,resizable=no,scrollbars=no,location=no,directories=no,menubar=no");

	if(newwin.document.forms[0])

	{  // if ther's already stuff in the window

	newwin.focus();
		}
		else
		{
	newwin.window.location='/meta/ads/hyperspace_tour.html';
		}

		}
	newwin.focus();

}