Auto Suggest WordPress hacking stuff

gistfile1.aw

add_action('wp_head', 'kkf_add_autosuggest');

function kkf_add_autosuggest() {
?>
    <script type="text/javascript">
    // Function to add tag auto suggest
    function setSuggest(id) {
        jQuery('#' + id).suggest("<?php echo admin_url('/admin-ajax.php?action=ajax-tag-search&tax=search_term'); ?>", { delay: 500, minchars: 2 });
    }
    </script>
<?php
}

// autocompletion for non-logged-in users cribbed from http://sillybean.net/code/themes/twenty-links-a-delicious-inspired-child-theme-for-wordpress/
add_action('wp_ajax_nopriv_ajax-tag-search', 'kkf_add_autosuggest_callback');

// cribbed from admin-ajax.php
function kkf_add_autosuggest_callback() {
	global $wpdb;
	if ( isset( $_GET['tax'] ) ) {
		$taxonomy = sanitize_key( $_GET['tax'] );
		$tax = get_taxonomy( $taxonomy );
		if ( ! $tax )
			die( '0' );
	} else {
		die('0');
	}

	$s = stripslashes( $_GET['q'] );

	if ( false !== strpos( $s, ',' ) ) {
		$s = explode( ',', $s );
		$s = $s[count( $s ) - 1];
	}
	$s = trim( $s );
	if ( strlen( $s ) < 2 )
		die; // require 2 chars for matching

	$results = $wpdb->get_col( $wpdb->prepare( "SELECT t.name FROM $wpdb->term_taxonomy AS tt INNER JOIN $wpdb->terms AS t ON tt.term_id = t.term_id WHERE tt.taxonomy = %s AND t.name LIKE (%s)", $taxonomy, '%' . like_escape( $s ) . '%' ) );

	echo join( $results, "\n" );
}

search form

<form method="get" action="<?php get_option('home'); ?>">
					<input type="text" id="s" autocomplete="off" value="type what you are looking for in this beautiful white box…" name="s" onfocus="if(this.value == 'type what you are looking for in this beautiful white box…') { this.value = ''; setSuggest('s');}" />
					<input type="hidden" name="post_type" value="page" />
					<input type="submit" class="button" value="Search" />
					</form>