Im trying to implement a menu in a wordpress theme,

HI,

Im trying to implement a menu in a wordpress theme, the main menu work fine without a submenu but it breaks down when i add submenu;. basically what am asking how do i show a parent menu along with its children menu.

Ex: Main menu

Menu1

menu2

etc..

here’s what i have so far. this call the wp_nav_menu

if(has_nav_menu('primary-menu')){
wp_nav_menu(array(
'theme_location' => 'primary-menu',
'container' => '',
'container_class' => '',
'container_id' => '',
'menu_class' => ' ',
'menu_id' => '',
'echo' => true,
'before' => '',
'after' => '',
'link_before' => '',
'link_after' => '',
'items_wrap' => '<li class="dropdown">%3$s </li>',
'depth' => 0,
'walker' => ''
) );
}else {
echo"Please click <a target="_blank" href=".admin_url('nav-menus.php')." > here </a> to create a menu";
}

and this at the bottom is my html template that i wish to implement the above menu with it, currently this html code below work fine in the html raw theme, just trying to use it in the wp_nav_menu

<li class="dropdown">
<a href="index.html" class="dropdown-toggle">HOME<b class="caret"></b></a>
<ul class="dropdown-menu">
<li><a href="index.html"> (Shop)</a>
</li>
<li><a href="home-business.html"> (Business)</a>
</li>
<li><a href="home-slider.html"> (Slider)</a>
</li>

</ul>
</li>

Thanks in advanced.