I viewed your site using Firefox 24.
The Firefox Web Developer Inspector shows your Content-Type header is screwed up. You are sending:
Content-Type: text/html; charset: utf-8;charset=utf-8
Content-Type: text/html; charset=utf-8
Secondly, your HTML entities are screwed up. Your HTML source shows:
The entity number should begin with an ampersand (& character) not an entity name (& ).
Are you running [htmlspecialchars() or [URL="http://php.net/manual/en/function.htmlentities.php"]htmlentities()](http://www.php.net/manual/en/function.htmlspecialchars.php) on the ampersand character when you should not be? Your PHP could be taking the & character in the HTML entity ID and converting it into the entity name &.