<?php

class description_walker extends Walker_Nav_Menu
{
	 function start_el(&$output, $item, $depth = 0, $args = array(), $current_object_id = 0 )
	 {
	     global $wp_query;
	     $indent = ( $depth ) ? str_repeat( "\t", $depth ) : '';

	     $class_names = $value = '';

	     $classes = empty( $item->classes ) ? array() : (array) $item->classes;

	     $class_names = join( ' ', apply_filters( 'nav_menu_css_class', array_filter( $classes ), $item ) );
	     $class_names = ' class="' . esc_attr( $class_names ) . '"';

	     $output .= $indent . '<li id="menu-item-'. $item->ID . '"' . $value . $class_names .'>';

	     $attributes  = ! empty( $item->attr_title ) ? ' title="'  . esc_attr( $item->attr_title ) .'"' : '';
	     $attributes .= ! empty( $item->target )     ? ' target="' . esc_attr( $item->target     ) .'"' : '';
	     $attributes .= ! empty( $item->xfn )        ? ' rel="'    . esc_attr( $item->xfn        ) .'"' : '';
	     $attributes .= ! empty( $item->url )        ? ' href="'   . esc_attr( $item->url        ) .'"' : '';

	     if($depth != 0)
	     {
	     	$description = "";
	     }
	     else
	     {
	     	$description  = ! empty( $item->description ) ? '<span>'.esc_attr( $item->description ).'</span>' : '';
	     }


	     $item_output = $args->before;
	     $item_output .= '<a'. $attributes .'>';
	     $item_output .= $args->link_before .'<strong>'.apply_filters( 'the_title', $item->title, $item->ID ).'</strong>';
	     $item_output .= $description.$args->link_after;
	     $item_output .= '</a>';
	     $item_output .= $args->after;

	     $output .= apply_filters( 'walker_nav_menu_start_el', $item_output, $item, $depth, $args );
	}
}