var popup_window = null;
function popup(status,url)
{
	if(status != 0)
	{
	if(popup != null) popup.focus();
	else
		{
		var popup = open(url, "rechts", "dependent=yes,width=300,height=120,scrollbars=0,screenX=400,screenY=10");
		popup_window = popup;
		}
	}
	else
	{
	if(popup_window != null) popup_window.close();
	}
}