Hello.
I've changed the function form_button_data to track when someone signs on or login. For that, i've added this code:
if (@$button['label']=="Log In")
{
$this->output('<INPUT'.rtrim(' '.@$button['tags']).' VALUE="'.@$button['label'].'" TITLE="'.@$button['popup'].'" TYPE="submit"'.
(isset($style) ? (' CLASS="'.$baseclass.'" onclick="_gaq.push([\'_trackEvent\',\'Log In\',\'Submit\'])" onmouseover="this.className=\''.$hoverclass.'\';" onmouseout="this.className=\''.$baseclass.'\';"') : '').'/>');
}elseif (@$button['label']=="Register")
{
$this->output('<INPUT'.rtrim(' '.@$button['tags']).' VALUE="'.@$button['label'].'" TITLE="'.@$button['popup'].'" TYPE="submit"'.
(isset($style) ? (' CLASS="'.$baseclass.'" onclick="_gaq.push([\'_trackEvent\',\'Register\',\'Submit\'])" onmouseover="this.className=\''.$hoverclass.'\';" onmouseout="this.className=\''.$baseclass.'\';"') : '').'/>');
}
else { //rest of bottons
$this->output('<INPUT'.rtrim(' '.@$button['tags']).' VALUE="'.@$button['label'].'" TITLE="'.@$button['popup'].'" TYPE="submit"'.
(isset($style) ? (' CLASS="'.$baseclass.'" onmouseover="this.className=\''.$hoverclass.'\';" onmouseout="this.className=\''.$baseclass.'\';"') : '').'/>');
}//endelse
Regars