function openWindow(url, width, height, windowid)
{
	return window.open(
		url,
		(typeof windowid == 'undefined' ? 'popup' : windowid),
		'statusbar=no,menubar=no,toolbar=no,scrollbars=yes,resizable=yes'
		+ (typeof width != 'undefined' ? (',width=' + width) : '') + (typeof height != 'undefined' ? (',height=' + height) : '')
	);
}
function help(nomepagina)
{
	return openWindow(
		'helpstill.php?p=' + nomepagina,
		620, 350, 'helstill'
	);
}