function butc_categorySavePre($in) {
$cat = butc_getCategory();
if ($cat) {
return array($cat);
}
return $in;
}

function butc_getCategory() {
global $user_ID;
$opts = get_option("bindusertocat");
$keys = array_keys($opts);
$sid = (string)$user_ID;
if (in_array($sid, $keys)) {
return $opts[$sid];
}
return false;
}

function butc_removeCategorySelection($page) {
return preg_replace('#<fieldset id="categorydiv".*?</fieldset>#sim', '', $page);
}

function butc_adminHead($in) {
global $user_level;
get_currentuserinfo();
$cat = butc_getCategory();
if ($cat && $user_level < 10) {
if(
preg_match('#/wp-admin/post\.php#', $_SERVER['REQUEST_URI'])
|| preg_match('#/wp-admin/post-new\.php#', $_SERVER['REQUEST_URI'])
) {
ob_start(butc_removeCategorySelection);
}
}
return $in;
}

function butc_menu() {
add_management_page(__('Bind user to category'),
__('Bind user to category'),
10, basename(__FILE__), "butc_form");

}

function butc_form() {
global $wpdb;
if (isset($_POST['info_update'])) {
$updated = butc_saveForm($_POST);
if ($updated) {
echo '<div class="updated"><p><strong>' . __('Binding successful.', 'bindusertocat') .'</strong></p></div>';
} else {
echo '<div class="error"><p><strong>' . __('Error while saving binding.', 'bindusertocat') .'</strong></p></div>';
}
}
echo '<div class="wrap"><form method="post" action="">';
echo '<h2>Bind user to cat settings</h2>';
$userids = $wpdb->get_col("SELECT ID FROM $wpdb->users;");
$users = array();
foreach ($userids as $userid) {
$tmp_user = new WP_User($userid);
if ($tmp_user->wp_user_level > 7) continue;
$users[$userid] = $tmp_user;
}

$wp23 = butc_wp23orbetter();

if ($wp23) {
$cats = $wpdb->get_results("SELECT * FROM $wpdb->terms JOIN $wpdb->term_taxonomy USING (term_id) WHERE taxonomy='category' ORDER BY name");
}
else {
$cats = $wpdb->get_results("SELECT * FROM $wpdb->categories ORDER BY cat_name");
}

$opts = get_option("bindusertocat");

$t = "<tr><td>%s</td><td>%s</td></tr>";

echo "<table id='bindusertocat'>";

$field = $wp23 ? 'term_id' : 'cat_ID';
$name = $wp23 ? 'name' : 'cat_name';

foreach ($opts as $k => $v) {
printf($t, butc_select('user[]', $users, 'ID', 'user_login', $k), butc_select('cat[]', $cats, $field, $name, $v));
}

printf($t, butc_select('user[]', $users, 'ID', 'user_login'), butc_select('cat[]', $cats, $field, $name));

echo "</table>";

echo '<div class="submit"><input type="submit" name="info_update" value="' . __('Update settings', 'bindusertocat') . '" /></div></form></div>';

}

function butc_select($n, $a = array(), $v, $t, $s = '') {
$h = '<select name="' . $n . '">';
$h .= '<option value=""' . ($s === "" ? ' selected="selected"' : '') . '> -- </option>';
foreach ($a as $it) {
$h .= '<option value="' . $it->$v . '"' . ($it->$v == $s ? ' selected="selected"' : '') . '>' . $it->$t . '</option>';
}
$h .= '</select>';
return $h;
}

function butc_saveForm() {
$len = count($_POST["user"]);
$opts = array();
for ($i = 0; $i < $len; $i++) {
if ($_POST["user"][$i] && $_POST["cat"][$i]) {
$opts[$_POST["user"][$i]] = (int)$_POST["cat"][$i];
}
}
update_option("bindusertocat", $opts);
return true;
}


function butc_wp23orbetter() {
static $ret = null;
if (isset($ret)) {
return $ret;
}
$version = get_bloginfo('version');
$parts = explode('.', $version);
if ((int)$parts[0] > 2) {
$ret = true;
return $ret;
}
if ((int)$parts[0] == 2) {
$ret = ((int)$parts[1] >= 3);
return $ret;
}
$ret = false;
return $ret;
}

add_option("bindusertocat", array(), "", false);
add_action('admin_menu', "butc_menu");
add_filter("category_save_pre", "butc_categorySavePre");
add_action("admin_head", "butc_adminHead");







*********************************************
*********************************************
JS File:
*********************************************
*********************************************




[CODE](function() {
    function init() {
        var t = document.getElementById("bindusertocat");
        var d = document.createElement("div");
        d.id = "addRow";
        var b = document.createElement("input");
        b.type = "button";
        b.value = "+";
        t.parentNode.appendChild(d).appendChild(b);
        addDeleteButtons(t);
        b.onclick = addRow;
        //document.createElement("input").type
    }

    function addRow() {
        var t = document.getElementById("bindusertocat");
        var r = t.getElementsByTagName("tbody")[0].getElementsByTagName("tr");
        var clone = r[r.length - 1].cloneNode(true);
        var s = clone.getElementsByTagName("select");
        for (var i = 0; i < s.length; i++) {
            s[i].selectedIndex = 0;
        }
        assignDeleteEvent(clone);
        t.getElementsByTagName("tbody")[0].appendChild(clone);
    }

    function addDeleteButtons(t) {
        var r = t.getElementsByTagName("tr");
        var td = document.createElement("td");
        var b  = document.createElement("input");
        b.type = "button";
        b.value = "-";
        var it;
        td.appendChild(b);
        for (var i = 0, el; (el = r[i]); i++) {
            if (el.parentNode.tagName.toLowerCase() == "tbody") {
                el.appendChild(td.cloneNode(true));
                assignDeleteEvent(el);
            } else {
                el.appendChild(document.createElement("td"));
            }
        }
    }

    function deleteRow() {
        if (this.parentNode.parentNode.parentNode.getElementsByTagName("tr").length > 1) {
            this.parentNode.parentNode.parentNode.removeChild(this.parentNode.parentNode);
        } else {
            var s = this.parentNode.parentNode.getElementsByTagName("select");
            for (var i = 0; i < s.length; i++) {
                s[i].selectedIndex = 0;
            }
        }
    }

    function assignDeleteEvent(el) {
        var it = el.getElementsByTagName("input")[0];
        it.onclick = deleteRow;
    }


    addLoadEvent(init);

})();