function update_pr_tools()
{
    global $prtools_debug;
    global $prtools_version;
    $prtools_settings = get_option('pagerank_tools_settings');
    // unset($prtools_settings['running_number']);
    if ($prtools_debug) {
        print_r_html($prtools_settings);
    }
    // Reorganizing tables // 08. December 2010 // Version 0.2 to 0.2.1
    // Adding entries for requests urls without pr from google,
    // adding first creation log,
    // get difference between last PR and new PR in table
    // and getting num of entries in table
    if ($prtools_settings['running_number'] == "") {
        cleanup_db_from_02();
    }
    if ($prtools_settings['running_number'] < 3) {
        alter_table_from_02();
        update_url_table(true, true);
        $prtools_settings['fetch_titles_num'] = 2;
    }
    // Saving which updates have been made
    $prtools_settings['version'] = $prtools_version;
    $prtools_settings['running_number'] = 3;
    // if($prtools_debug)unset($prtools_settings['running_number']);
    update_option('pagerank_tools_settings', $prtools_settings);
}
function prtools_overview()
{
    global $prtools_extended;
    update_url_table(false, false);
    update_pr_tools();
    if (isset($_GET['url']) && $prtools_extended) {
        prtools_url();
    } else {
        global $wpdb;
        global $prtools_url_table;
        global $prtools_pr_table;
        global $prtools_sum_urls;
        global $prtools_sum_urls_query;
        global $prtools_absolute_path;
        $table_name = $wpdb->prefix . "prtools_url";
        $sql = "SELECT count(*) AS count FROM " . $table_name;
        $prtools_stat = $wpdb->get_row($sql);
        $prtools_sum_urls = $prtools_stat->count;
        $sql = "SELECT * FROM " . $table_name . " ORDER by pr DESC";
        $sql = apply_filters('prtools_main_sql', $sql);
        $prtools_rows = $wpdb->get_results($sql);
        $prtools_sum_urls_query = count($prtools_rows);
        ?>

<!-- Head of entry //-->
<div class="tab-head">
  <h2>
    <?php 
        _e('Pageranks', 'prtools');
        ?>
    <?php 
        if (isset($_GET['url']) && $prtools_extended) {
            echo ' ' . $_GET['url'];
        }
        ?>
  </h2>
</div>

<?php 
        do_action('prtools_main_head');
        ?>

<!-- Listing pageranks of all sites //-->
<table class="widefat">
<?php 
        $tablehead = '<thead><tr>';
        $tablehead .= '<th scope="col">' . __('PR', 'prtools') . '</th>';
        $tablehead .= '<th scope="col">' . __('URL', 'prtools') . '</th>';
        $tablehead .= '<th scope="col">&nbsp;</th><th scope="col">' . __('Type', 'prtools') . '</th>';
        $tablehead .= '<th scope="col">' . __('Update', 'prtools') . '</th>';
        $tablehead .= '</tr></thead>';
        $tablehead = apply_filters('prtools_main_tablehead', $tablehead);
        echo $tablehead;
        ?>
  	<tbody>
    <?php 
        foreach ($prtools_rows as $row) {
            if ($row->lastupdate != 0) {
                $row->date = date("d.m.Y", $row->lastupdate);
            } else {
                $row->date = "n/a";
            }
            if ($row->pr == -1) {
                $pr = "n/a";
            } elseif ($row->pr == -2) {
                $pr = "-";
            } else {
                $pr = $row->pr;
            }
            $prtools_row = '<tr>';
            $prtools_row .= '<td scope="row">' . $pr . '</td>';
            $prtools_row .= '<td scope="row"><a href="' . $row->url . '" target="_blank">' . $row->url . '</a></td>';
            $prtools_row .= '<td scope="row">
								<a href="' . $row->url . '" target="_blank">[visit]</a>
								<a href="#" border="0" title="Delete" onclick="question_redirect(\'' . __('Do you really want to delete', 'prtools') . ' ' . $row->url . ' and all data from Pagerank tools?\', \'' . str_replace('%7E', '~', $_SERVER['REQUEST_URI']) . '&delete_url=' . $row->url . '\' );">[delete]</a>
							</td>';
            $prtools_row .= '<td scope="row">' . $row->url_type . '</td>';
            $prtools_row .= '<td scope="row">' . $row->date . '</td>';
            $prtools_row .= '</tr>';
            $prtools_row = apply_filters('prtools_main_tablerow', $prtools_row, $row);
            echo $prtools_row;
        }
        ?>
  </tbody>
</table>
<div style="height:20px"></div>
<?php 
    }
    do_action('prtools_main_bottom');
}