Thanks Teseo!
marking original post as solved.
I read it and figured it out and the fancybox is working! The head.php located in themes/bender/common/head.php should be this:
<?php
$js_lang = array(
'delete' => __('Delete', 'bender'),
'cancel' => __('Cancel', 'bender')
);
osc_enqueue_script('jquery');
osc_enqueue_script('jquery-ui');
osc_register_script('global-theme-js', osc_current_web_theme_js_url('global.js'), 'jquery');
osc_register_script('delete-user-js', osc_current_web_theme_js_url('delete_user.js'), 'jquery-ui');
osc_enqueue_script('global-theme-js');
?>
<meta http-equiv="Content-type" content="text/html; charset=utf-8" />
<title><?php echo meta_title() ; ?></title>
<meta name="title" content="<?php echo osc_esc_html(meta_title()); ?>" />
<?php if( meta_description() != '' ) { ?>
<meta name="description" content="<?php echo osc_esc_html(meta_description()); ?>" />
<?php } ?>
<?php if( meta_keywords() != '' ) { ?>
<meta name="keywords" content="<?php echo osc_esc_html(meta_keywords()); ?>" />
<?php } ?>
<?php if( osc_get_canonical() != '' ) { ?>
<!-- canonical -->
<link rel="canonical" href="<?php echo osc_get_canonical(); ?>"/>
<!-- /canonical -->
<?php } ?>
<meta http-equiv="Cache-Control" content="no-cache" />
<meta http-equiv="Expires" content="Fri, Jan 01 1970 00:00:00 GMT" />
<meta name="viewport" content="initial-scale = 1.0,maximum-scale = 1.0" />
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<!-- favicon -->
<link rel="shortcut icon" href="<?php echo osc_current_web_theme_url('favicon/favicon-48.png'); ?>">
<link rel="apple-touch-icon-precomposed" sizes="144x144" href="<?php echo osc_current_web_theme_url('favicon/favicon-144.png'); ?>">
<link rel="apple-touch-icon-precomposed" sizes="114x114" href="<?php echo osc_current_web_theme_url('favicon/favicon-114.png'); ?>">
<link rel="apple-touch-icon-precomposed" sizes="72x72" href="<?php echo osc_current_web_theme_url('favicon/favicon-72.png'); ?>">
<link rel="apple-touch-icon-precomposed" href="<?php echo osc_current_web_theme_url('favicon/favicon-57.png'); ?>">
<!-- /favicon -->
<link href="<?php echo osc_current_web_theme_url('js/jquery-ui/jquery-ui-1.10.2.custom.min.css') ; ?>?<?php echo rand(0, pow(10, 5)); ?>" rel="stylesheet" type="text/css" />
<script type="text/javascript">
var bender = window.bender || {};
bender.base_url = '<?php echo osc_base_url(true); ?>';
bender.langs = <?php echo json_encode($js_lang); ?>
</script>
<link href="<?php echo osc_current_web_theme_url('css/main.css') ; ?>?<?php echo rand(0, pow(10, 5)); ?>" rel="stylesheet" type="text/css" />
<?php osc_run_hook('header') ; ?>