Question about reg ex

[Norad Norad]

Hi all,
I still have the problem

http://lists.gnu.org/archive/html/websec-users/2007-02/msg00000.html

I have a question: should the HTML code included in the regular expression?

I tried

visitata\ da\ \d\d\d\d
visitata\ da\d\d\d\d

and

visitata\ da</font><br><font\ size="2">\d\d\d\d<br>

but it doesn't work.

The page I'm tring to monitor is 
http://www.crema.unimi.it/Web.asp?Tipo=23&Area=5

thanks for any help provided...

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