Safari ajax And other goodies = false How to fix?

Question

JavaScript

There is a Women's website dedicated to Drawings on nails.

Here's how it should look: vitanail.ru
Here's how it looks in Safari:
api.browsershots.org/png/original/0f/0f57d84454a57...
There's a button at the top that turns false.

What's so special about safari that it puts false in there instead of the login button?

Insertion happens like this

AJAX->SERVER
SERVER->RESPONSE_AJAX
RESPONSE_AJAX->eval()
eval()->innerHTML
innerHTML='HTML login button';

There is no safari at hand and I can’t even imagine how it is with debugging.

Answer 1

eval()
what?