<?php previous_post_link( '<div class="nav-previous alignleft">%link</div>', '<span class="meta-nav">' . _x( '&larr;', 'Previous post link', 'omega' ) . '</span> %title' ); ?>
<?php next_post_link( '<div class="nav-next alignright">%link</div>', '%title <span class="meta-nav">' . _x( '&rarr;', 'Next post link', 'omega' ) . '</span>' ); ?>