A CSS Menu by this List (script)

hi,

i finally found the following script. But now i can’t get my menu working with CSS. So I need a little bit of help. Can someone give me a start how to make this menu work? (no bullets en under each other is enough)

<div id="navigatie">
<?php
	// is there a page or category? both may have childeren
	if( is_category() ) {
		// if this category has childeren
		$categ_object = get_category( get_query_var( 'cat' ), false );
		$list_subcats = wp_list_categories( 'title_li=&depth=1&echo=0&child_of=' . (int)$categ_object->cat_ID );
		// wordpress never returns null or empty string. If children, <a> tag will be found, otherwise string is returned.
		preg_match_all( '|<a.*?href=[\'"](.*?)[\'"].*?>|i', $list_subcats, $m );
		if( !$m[ 1 ] ) {
			// there are no subcategories. Why?
			// this is either the last child or this category really doesn't have subcategories
			// last child must have a parent, right?
				if( (int)$categ_object->category_parent > 0 ) {
					// we'll need parent category name for the title, extract name via category ID
					$parent_cat_name = $wpdb->get_var( "SELECT name FROM $wpdb->terms WHERE term_id=" . (int)$categ_object->category_parent );
?>
					<div class="box">
					<h3><?php echo $parent_cat_name; ?></h3>
					<ul class="subnavigation">
					<?php wp_list_categories( 'title_li=&depth=1&child_of=' . (int)$categ_object->category_parent ); ?>
					</ul>
					</div>
<?php
				} // else...no else! This category really doesn't have child categories.
		} else {
			// ohoho! ...but here are some. List them all...
?>
			<div class="box">
			<h3><?php echo $categ_object->cat_name; ?></h3>
			<ul class="subnavigation">
			<?php wp_list_categories( 'title_li=&depth=1&child_of=' . (int)$categ_object->cat_ID ); ?>
			</ul>
			</div>
<?php
		}
	}
	// almost the same for page hierarchy.
	if( is_page() ) {
		// here we go...just do the same job
		$page_object = get_post( get_query_var( 'page' ), OBJECT );
		$list_subpages = wp_list_pages( 'title_li=&depth=1&echo=0&child_of=' . (int)$page_object->ID );
		// wordpress never returns null or empty string. If children, <a> tag will be found, otherwise string is returned.
		preg_match_all( '|<a.*?href=[\'"](.*?)[\'"].*?>|i', $list_subpages, $ms );
		if( !$ms[ 1 ] ) {
			if( (int)$page_object->post_parent > 0 ) {
				$parent_post_name = $wpdb->get_var( "SELECT post_title FROM $wpdb->posts WHERE ID=" . (int)$page_object->post_parent );
?>
				<div class="box">
				<h3><?php echo $parent_post_name; ?></h3>
				<ul class="subnavigation">
				<?php wp_list_pages( 'title_li=&depth=1&child_of=' . (int)$page_object->post_parent ); ?>
				</ul>
				</div>
<?php
			}
		} else {
?>
				<div class="box">
				<h3><?php echo $page_object->post_title; ?></h3>
				<ul class="subnavigation">
				<?php wp_list_pages( 'title_li=&depth=1&child_of=' . (int)$page_object->ID ); ?>
				</ul>
				</div>
<?php
		}
	}
?>
</div>