How can I have countdown script/plugin below

Hi,
I'm determined to get countdown to work on the home and I need your trusted professional help and don't mind if the theme is given an open heart surgery. I need to crack this. How can you aid me add countdown script/plugin code into the header.php of my site (http://deefrentng.com/smile)? Here is the screenshot: http://awesomescreenshot.com/0cc4ndpu92

Header.php code :
`<img src="<?php echo $rb_logoURL; ?>" alt="<?php bloginfo('name'); ?>" />
<?php } ?>
</div>
<!-- END: Logo -->
<nav id="mainmenu">
<?php
if ( has_nav_menu( 'headermenu' ) ){
wp_nav_menu(array(
'container_class' => 'menu-header',
'theme_location' => 'headermenu',
'walker' => new rb_menu_nav_walker(),
'show_home' => true
));
}
?>
</nav>

<?php if(defined('ICL_LANGUAGE_CODE')){ ?>
<div id="wpmlSwitch">
<?php echo rb_wpmlSwitcher(); ?>
</div>
<?php } ?>

<?php if(rb_opt('twitterEnable','false')=='true'){ ?>
<div id="TwitterFeed">
<h3><?php _e('Twitter Feed','rb'); ?></h3>

  • <?php _e('Tweets are loading','rb'); ?>

</div>
<?php } ?>
<?php
$rb_menuSubText = rb_opt('menuSubText','');
$rb_menuSubTextLink = rb_opt('menuSubTextLink','');
if ( !empty($rb_menuSubText) ) { ?>
<h3 class="menulink">
<?php if(!empty($rb_menuSubTextLink)) echo ''; ?>
<?php echo $rb_menuSubText; ?>

<?php if(!empty($rb_menuSubTextLink)) echo ''; ?>
</h3>
<?php } ?>