Please help! I entered a piece of code to fix mobile header, now site is down…

I have been trying to fix the header display on my site and now I cannot access it. It is just coming up with this:

Parse error: syntax error, unexpected end of file in /home3/chris83/public_html/wp-content/themes/enfold/functions-enfold.php on line 1392

I entered this piece of code into the Functions.php

add_filter(‘avf_logo’,’av_change_logo’);
function av_change_logo($logo)
{
if(wp_is_mobile() )
{
$logo = “http://kriesi.at/wp-content/themes/kriesi/images/logo.png”;
}
return $logo;
}

As suggested from this blog post http://kriesi.at/documentation/enfold/change-logo-on-mobile/

Please help!