gnucco

Hi, finally I’ve found a solution (it could not be the best, but it seems to work).
First I created a category template for each category (let’s say I have 4 categories), copying the file index.php of my theme 4 times and renaming them category-XX.php, where XX is the ID category. Then I edited those 4 files adding at the beginning of files the following code, taken and adapted from http://www.web-templates.nu/2008/09/21/get_category_count/ :

function wt_get_category_count($input = '') {
	global $wpdb;
	if($input == '')
	{
		$category = get_the_category();
		return $category[0]->category_count;
	}
	elseif(is_numeric($input))
	{
		$SQL = "SELECT $wpdb->term_taxonomy.count FROM $wpdb->terms, $wpdb->term_taxonomy WHERE $wpdb->terms.term_id=$wpdb->term_taxonomy.term_id AND $wpdb->term_taxonomy.term_id=$input";
		return $wpdb->get_var($SQL);
	}
	else
	{
		$SQL = "SELECT $wpdb->term_taxonomy.count FROM $wpdb->terms, $wpdb->term_taxonomy WHERE $wpdb->terms.term_id=$wpdb->term_taxonomy.term_id AND $wpdb->terms.slug='$input'";
		return $wpdb->get_var($SQL);
	}
}

<?php $max_page=floor(wt_get_category_count(XX)/5); ?>

where again XX is the ID category and 5 is the number of posts per page.

Now everytime I click on a category $max_page variable is computed and vavigation should work as normal.

bye