pagination help needed please

Hello,

I have a function that displays all posts in a category.
I can’t get pagination to work and I have tried everything.
If you can help me I would be very appreciative and if not I will then seek a way to pay someone to help as this is just taking way to long to do something fairly simple.
thank you.
code:

FUNCTION CALLING PAGE:
<?php list_advertisers_business(); ?>

FUNCTION THAT GETS CALLED:

function list_advertisers_business() {
$cats = get_categories('include=7');
echo '<ul class="cat-list">';
  foreach($cats as $cat) :
    //only loop through categories which have subcategories
    if( get_categories('parent='.$cat->term_id) ) :
	$cat_name=$cat->slug;
    echo '<ul>';
	  // get the direct sub categories
	  $sub_cats = get_categories('parent='.$cat->term_id);
	    foreach($sub_cats as $sub_cat) :
		$sub_cat_name=$sub_cat->slug;
		echo ' <div id="category-header">' . $sub_cat->name; ?></div><?
		// get all posts with that category
        $cat_posts = get_posts('category_name='.$sub_cat_name);
          foreach($cat_posts as $post) :
          setup_postdata($post);
           ?>
            <div id="query">
			<div class="advertiser-table">
			<h2 class="advertiser-name"><? $Company = get_post_meta($post->ID, 'Company', true); if($Company != ''){ echo $Company; } ?></h2>
			<span class="advertiser-details">
						<? require 'data-table.inc'; ?>
			</span>
			</div>
			</div>
			<?
          endforeach; // closes 'foreach($cat_posts as $post)'
		endforeach; // closes 'foreach($sub_cats as $sub_cat)'
		echo '</ul></li>';
	endif;
  endforeach; // closes 'foreach($cats as $cat)'
echo '</ul>';
}

Thank you
James