[Plugin: Use Google Libraries] beginner help please

building my first site locally and I can’t get my code to functions to work. I build it perfectly, now adapting it for wordpress is killing me. My functions.php is

<?php
function my_scripts_method() {
    wp_deregister_script( 'jquery' );
    wp_register_script( 'jquery', 'http://ajax.googleapis.com/ajax/libs/jquery/1.8.1/jquery.min.js');
    wp_enqueue_script( 'jquery' );

	wp_register_script( 'prettyportfolio', get_template_directory_uri() . '/js/script.js', array( 'jquery' ), null, true );
	wp_enqueue_script( 'prettyportfolio' );
}
if( is_page_template('staticportfolio.php')){
add_action('wp_enqueue_scripts', 'my_scripts_method');
}?>

Any help is greatly appreciated.

http://wordpress.org/extend/plugins/use-google-libraries/