Well, that was odd. I'm using Mozilla, so it seems odd to me that it would work in Firebird, but I digress. I even copied and pasted the link in to no avail. Then for kicks I tried it in IE, and voila! it worked. :0
I used to use Firebird myself (and later the next release Firefox, aka Firebird 2.0) but switched to Mozilla because it gave me a lot less problems while giving me the same features I loved.