Primary links nestled?

OK this is for a site that I have been working on so have only managed to get it sorted for horizontal drop downs and the colours are for that site.

nice_menu.module

<?php
// $Id: Exp $
/*
  By Jake Gordon (jakeg)
  Module to enable nice navigation menus
  Modifications and help by Simon Rawson.
  Further modification by Mark Harrison (syawillim)
*/

// Implementation of hook_help()
function nice_menus_help($section) {
  switch ($section) {
    case 'admin/modules#description':
      $output = t('Make drop down css/javascript menus for site navigation and admin menus');
      break;
    case 'admin/settings/nice_menus':
      $output = t('<p>This is a simple module that enables the site to have drop down css/javascript menus for site navigation and admin navigation.</p>');
      break;
  }
  return $output;
}


// Implemention of hook_menu()
function nice_menus_menu($may_cache) {
  if (!$may_cache) {
    drupal_add_js(drupal_get_path('module', 'nice_menus').'/nice_menus.js');
    theme_add_style(drupal_get_path('module', 'nice_menus').'/nice_menus.css');
  }
}


// Implementation of hook_settings()
function nice_menus_settings() {
  $form['nice_menus_number'] = array(
    '#type' => 'select', 
    '#title' => t('Number of Nice Menus'), 
    '#description' => t('The total number of independend nice menus you want. You configure them as normal in admin/blocks'),
    '#default_value' => variable_get('nice_menus_number', '2'),
    '#options' => drupal_map_assoc(array(0, 1, 2, 3, 4, 5, 6, 7, 8))
  );

  return $form;
}


// Implementation of hook_block().
function nice_menus_block($op = 'list', $delta = 0, $edit = array()) {
  global $user;

  switch ($op) {
    case 'list':
      for ($i=1;$i<=variable_get('nice_menus_number', '2');$i++) {
        $blocks[$i]['info'] = variable_get('nice_menus_name_'. $i, 'Nice Menu ' . $i) . ' (Nice Menu)';
      }
      return $blocks;
    break;

    case 'configure':
      $form['nice_menus_name_'. $delta] = array(
        '#type' => 'textfield', 
        '#title' => t('Menu Name'), 
        '#default_value' => variable_get('nice_menus_name_'. $delta, 'Nice Menu ' . $delta)
      );
      $form['nice_menus_menu_'. $delta] = array(
        '#type' => 'select', 
        '#title' => t('Source Menu Tree'), 
        '#description' => t('The menu tree from which to show a nice menu.'),
        '#default_value' => variable_get('nice_menus_menu_'. $delta, '1'),
        '#options' => menu_parent_options(0)
      );
      $form['nice_menus_type_'. $delta] = array(
        '#type' => 'select', 
        '#title' => t('Menu Style'), 
        '#description' => t('right: menu items are listed on top of each other and expand to the right <br />left: menu items are listed on top of each other and expand to the left<br />down: menu items are listed side by side and expand down'),
        '#default_value' => variable_get('nice_menus_type_'. $delta, 'right'),
        '#options' => drupal_map_assoc(array('down'))
        //'#options' => drupal_map_assoc(array('right','left','down'))
      );
      return $form;
    break;

    case 'save':
      variable_set('nice_menus_name_'. $delta, $edit['nice_menus_name_'.$delta]);
      variable_set('nice_menus_menu_'. $delta, $edit['nice_menus_menu_'.$delta]);
      variable_set('nice_menus_type_'. $delta, $edit['nice_menus_type_'.$delta]);
    break;

    case 'view':
      if ($menu_tree = _nice_menu_tree(variable_get('nice_menus_menu_'.$delta, '1'))) {
        if ($menu_tree['content']) {
          $block['content'] = "<ul class='".variable_get('nice_menus_type_'.$delta,'down')."' id='nav'>".$menu_tree['content']."</ul>";
          $block['subject'] = ($menu_tree['subject'] == t('Navigation') ? ($user->uid ? $user->name : t('Navigation')) : $menu_tree['subject']);

        }
      }
      else $block['content'] = false;
	  
      return $block;
    break;
  }
}

// Private functions below

function _nice_menu_tree($pid = 1) { 
  $menu = menu_get_menu($pid); 
  $output['content'] = ''; 

  $output['subject'] = $menu['items'][$pid]['title'];

  if ($menu['visible'][$pid]['children']) {
    foreach ($menu['visible'][$pid]['children'] as $mid) {
      if (count($menu['visible'][$mid]['children']) > 0) {
        $output['content'].= "<li id='menu-$mid'>".menu_item_link($mid);
        $output['content'].= "<ul>";
        $tmp = _nice_menu_tree($mid);
        $output['content'].= $tmp['content'];
        $output['content'].= "</ul>";
        $output['content'].= "</li>";
      } 
      else {
        $output['content'].= "<li>".menu_item_link($mid)."</li>";
      }
    }
  }
  return $output;
}

nics_menu.js

// $Id: Exp $
//We only add the javascript to IE.
if (document.all) {

  function IEHoverPseudo() {

    var ulNodes = getElementsByClass("nice-menu");
    var j = 0;
    var liNodes = null;

    for(var i = 0; i < ulNodes.length; i++) { 
      liNodes = ulNodes[i].getElementsByTagName("li");
      for(j = 0; j < liNodes.length; j++) {
        if(liNodes[j].className == "menuparent") {
          liNodes[j].onmouseover=function() { this.className += " over"; }
          liNodes[j].onmouseout=function() { this.className = "menuparent"; }
        }
      }
    }
  }

  function getElementsByClass(searchClass,node,tag) {
	var classElements = new Array();
	  if ( node == null )
        node = document;
	  if ( tag == null )
		tag = '*';
	  var els = node.getElementsByTagName(tag);
	  var elsLen = els.length;
	  var pattern = new RegExp("(^|\\s)"+searchClass+"(\\s|$)");
	  for (i = 0, j = 0; i < elsLen; i++) {
		  if ( pattern.test(els[i].className) ) {
			classElements[j] = els[i];
			j++;
		  }
	  }
	return classElements;
  }

  //This is the Drupal method of adding a function to the BODY onload event.  (See misc/drupal.js)
  // TODO: see http://drupal.org/node/50443
  addLoadEvent(IEHoverPseudo);
}

nice_menu.css

/* $Id: nice_menus.css $ */

/* below should fix menu being a few pixels away in some themes, and menus disappearing behind other stuff */
.block-nice_menus {
  line-height: normal;
  font-size: normal;
  margin: 0 1.5em;
}

/* most people won't want to see the menu's title */
.block-nice_menus h2 {
  display: none;
}

.down #nav, .down #nav ul { /* all lists */
	padding: 0;
	margin: 0;
	list-style: none;
	line-height: 1;
}

#nav a {
	display: block;
	width: auto;
	padding: 0.4em 1em 0 0;
	margin: 0;
}

#nav li { /* all list items */
	float: left;
	width: auto; /* width needed or else Opera goes nuts */
	list-style: none;
}

#nav li ul { /* second-level lists */
	position: absolute;
	background: #005c9c;
	border: 1px solid #000;
	border-top: 0;
	padding: 0;
	width: 10em;
	left: -999em; /* using left instead of display to hide menus because display: none isn't read by screen readers */
    z-index: 10;
}

#nav li ul li { /* second-level lists */
	border-top: 1px solid #000;
	width: 10em;
}

#nav li ul a { /* second-level lists */
	display: block;
	width: 10em;
	padding: 0.3em;
	margin: 0;
}

#nav li ul ul { /* third-and-above-level lists */
	margin: -1em 0 0 10em;
}

#nav li:hover ul ul, #nav li.sfhover ul ul {
	left: -999em;
}

#nav li:hover ul, #nav li li:hover ul, #nav li.sfhover ul, #nav li li.sfhover ul { /* lists nested under hovered list items */
	left: auto;
}

#content {
	clear: left;
	color: #ccc;
}

Hope this helps.

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