I have that same hat and the snakes kept tipping over so I took a straw, stuck it in the tip of a can of Great Stuff and sprayed just a little bit in each snake- worked like a charm! I guess you could say I'm a snake charmer....Ooh...Tough crowd.  

I checked out that site. If I didn't know better , I would say some death studios people had a hand in those masks.

Hey there Frekyhead,
I found her at Halloween-Mask.com.  Here is the link to her page.  They guy that sells the masks is a really great guy too.

http://www.halloween-mask.com/medusa_42_40251cf.htm

Hope this helps ya.