var newwindow = '';
function popup(url) {
	if (!newwindow.closed && newwindow.location)
	{
		newwindow.location.href = url;
	}
	else
	{
		newwindow=window.open(url,'','width=260, height=270, innerWidth=260, innerHeight=270, titlebar=yes, toolbar=no, menubar=no, directories=no, location=no, scrollbars=yes, resizable=yes');
		if (!newwindow.opener) newwindow.opener = self;
	}
	if (window.focus) {newwindow.focus()}
	return false;
}