twentytwelve_content_nav( $html_id )

414	function twentytwelve_content_nav( $html_id ) {415		global $wp_query;416 417		if ( $wp_query->max_num_pages > 1 ) : ?>418			<nav id="<?php echo esc_attr( $html_id ); ?>" class="navigation">419				<h3 class="assistive-text"><?php _e( 'Post navigation', 'twentytwelve' ); ?></h3>420				<div class="nav-previous"><?php next_posts_link( __( '<span class="meta-nav">&larr;</span> Older posts', 'twentytwelve' ) ); ?></div>421				<div class="nav-next"><?php previous_posts_link( __( 'Newer posts <span class="meta-nav">&rarr;</span>', 'twentytwelve' ) ); ?></div>422			</nav><!-- .navigation -->423			<?php424	endif;425	}