gistfile1.js

//変更前
if ( $more ) {
        //217行目	
        $output .= '<span id="more-' . $post->ID . '"></span>' . $content[1];
} else {
	if ( ! empty($more_link_text) )
                //220行目
		$output .= apply_filters( 'the_content_more_link', ' <a href="' . get_permalink() . "#more-{$post->ID}\" class=\"more-link\">$more_link_text</a>", $more_link_text );
	$output = force_balance_tags($output);
}

//変更後
if ( $more ) {
	$output .= '<span id="more-' . $post->ID . '" class="more"></span>' . $content[1];
} else {
	if ( ! empty($more_link_text) )
                $output .= apply_filters( 'the_content_more_link', ' <div class="more-link"><a href="' . get_permalink() . "#more-{$post->ID}\" class=\"more-link\">$more_link_text</a></div>", $more_link_text );
	$output = force_balance_tags($output);
}