Ability to set linebreak in $h1_title Titel splitsen

page.tpl.php

<h1><?php print str_replace('[', '<span>', str_replace(']', '</span>', $h1_title)); ?></h1>
of <h1><?php print str_replace(array('[', ']'), array('<span>', '</span>'), $h1_title); ?></h1>

style.css

h1 span {
  clear: both;
  display: block;
}