/**
     * Add additional styles and scripts to head.
     */
    public function admin_head()
    {
        // Hide the language tabs if they shouldn't be displayed
        $show_language_tabs = $this->plugin->get_plugin_setting('show_language_tabs');
        if (!$show_language_tabs) {
            ?>
			<style>
			.multi-language-field {margin-top:0!important;}
			.multi-language-field .wp-switch-editor[data-language] {display:none!important;}
			</style>
			<?php 
        }
        // Enable translation of standard field types
        $translate_standard_field_types = $this->plugin->get_plugin_setting('translate_standard_field_types');
        if ($translate_standard_field_types) {
            ?>
			<script>
			var acf_qtranslate_translate_standard_field_types = <?php 
            echo json_encode($translate_standard_field_types);
            ?>
;
			</script>
			<?php 
        }
    }