Wow, I must be really blind. I do not see a email button or for that matter and email link anywhere on the page.
I looked at their source code for the email and I am not surprised that it is not displayed correctly. There are a bunch of errors in their javascript. As far as I have been able to make out, the email address is
dted@depressioNet.com.au I hope that it helps you out. This is what I see on my machine when I corrected the errors I found.
dted@depressioNet.com.auThis email address is being protected from spam bots, you need Javascript enabled to view it.
NOTE: I am not sure that the email address is 100% accurate as I could not figure out one error in the script. Sorry that I was more of a help.