Alerts for page including subpages

Is it possible to do a one line alert rule that alerts on red's on a
page and its subpages. Our main page shows all the sites and every site
is split into the same subsections. For some they are quite small but
with quite a few subpages so I just want one alert for everything on a
site. Is that possible without listing all subpages?

 
Thanks,

Craig Whilding

IT Systems Administrator
Edward Court 
Altrincham Business Park 
Altrincham 
WA14 5GL 
Tel: + 44 (0)XXX XXX XXXX
email: user-9ce31bfa66c3@xymon.invalid 
www.mentor.com
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