How to add month archive into menu with seven diffrent div in wordpress

Can anyone know how to add month archive in menu with some custom value of different part. here wordpress filter to add in menu.

function add_archive($items, $args) {
    $items1 .= '<a href="#">archives</a><ul class="sub-menu">';
    $items1 .= get_archives('monthly', '12', 'custom','<li>','</li>', FALSE,0);
    $items1 .= '</ul></li>';
    return str_replace('<a href="#">archives</a></li>',$items1,$items);

}
?>

The HTML output i'm looking for archive menu as follows...

<li class="menu-item menu-item-type-custom menu-item-object-custom menu-item-619" id="menu-item-619">
    <a href="#">Archive</a>
    <ul class="sub-menu" style="display: none;">
        <div class="drop-dowm">
            <div><a href="/2015/05">May 2015</a></div>
            <div><a href="/2015/04">April 2015</a></div>
            <div><a href="/2015/03">March 2015</a></div>
            <div><a href="/2015/02">February 2015</a></div>
            <div><a href="/2015/01">January 2015</a></div>
            <div><a href="/2013/12">December 2013</a></div>
            <div><a href="/2013/11">November 2013</a></div>
        </div>
        <div class="drop-dowm">
            <div><a href="/2013/10">October 2013</a></div>
            <div><a href="/2013/09">September 2013</a></div>
            <div><a href="/2013/08">August 2013</a></div>
            <div><a href="/2013/07">July 2013</a></div>
            <div><a href="/2013/06">June 2013</a></div>
            <div><a href="/2013/05">May 2013</a></div>
            <div><a href="/2013/04">April 2013</a></div>
        </div>
        <div class="drop-dowm">
            <div><a href="/2013/03">March 2013</a></div>
            <div><a href="/2013/02">February 2013</a></div>
            <div><a href="/2012/10">October 2012</a></div>
            <div><a href="/2012/06">June 2012</a></div>
            <div><a href="/2012/05">May 2012</a></div>
            <div><a href="/2012/03">March 2012</a></div>
            <div><a href="/2011/12">December 2011</a></div>
        </div>
    </ul>
</li>

plz help..

here i got solution for my own question. may it help other.

<?php 
add_filter( 'wp_nav_menu_items', 'add_archive');
function add_archive($items, $args) {

    $l = 0; 
    $ar = '';
    $ar = '';
    $ar .= '<li class="parent-category"><a href="#">archives</a><ul class="sub-menu">';
    global $wpdb;
    $months = $wpdb->get_results("SELECT DISTINCT MONTH( post_date ) AS month , YEAR( post_date ) AS year, COUNT( id ) as post_count FROM $wpdb->posts WHERE post_status = 'publish' and post_date <= now( ) and post_type = 'post' GROUP BY month , year ORDER BY post_date DESC");

    foreach($months as $month) 
    {

        if($l==0)
        {
            $ar .= '<div class="drop-dowm">';
        }
        elseif($l % 7 ==0)
        {
            $ar .= '</div><div class="drop-dowm">';
        }

        $ar .= '<div>';                 
        $ar .= '<a href="'.get_bloginfo('url').'/'. $month->year.'/'.$month->name.date("m", mktime(0, 0, 0, $month->month, 1, $month->year)).'">'.date("F", mktime(0, 0, 0, $month->month, 1, $month->year)).'&nbsp;&nbsp;'. $month->year.'</a>';

        $ar .= '</div>';
        $l++;   

    }                       

    $ar .= '</ul></li>';

    $items1 .= $ar;
    return str_replace('<a href="#">archives</a></li>',$items1,$items);
}
?>