taken from the old codex pages: function hook_css() { ?> <style> .wp_head_example { background-color : #f1f1f1; } </style> <?php } add_action('wp_head', 'hook_css'); or for inline scripts which need to be placed in the head, function hook_javascript() { ?> <script> alert('Page is loading...'); </script> <?php } add_action('wp_head', 'hook_javascript'); The wp_head() function which ones sees in all