Older jQuery plugin not yet working with newer WordPress site

Older jQuery plugin not yet working with newer WordPress site

I have an older jQuery plugin that works fine in a basic HTML web page, but not very well when I try to bring it into a WordPress page that's probably using a newer version of jQuery.

In particular, my WordPress site (version 3.7.1) is making use of a newer jQuery library, while the plugin is based on an older jquery-1.6.2.js library.

In the functions.php file of my site I've tried using the following code to bring a.) the necessary CSS, b.) the 1.6.2 javascript library, and c.) the plugin's javascript file into the <head> section of the web page:


function test_enqueue_css() {
    wp_enqueue_style( 'jquery.popeye', get_template_directory_uri() . '/jquery.popeye.css',false,'1.1','all');
    wp_enqueue_style( 'jquery.popeye.style', get_template_directory_uri() . '/jquery.popeye.style.css',false,'1.1','all');
}
add_action( 'wp_enqueue_scripts', 'test_enqueue_css' );


function get_jquery_library() {
         wp_enqueue_script( 'jquery-1.6.2', get_template_directory_uri() . '/jquery-1.6.2.js',false,'1.1','all');   
}
add_action( 'wp_enqueue_scripts', 'get_jquery_library', 1);


function test_enqueue_script() {
    wp_enqueue_script( 'jquery.popeye-2.1', get_template_directory_uri() . '/jquery.popeye-2.1.js',false,'1.1','all');
}
add_action( 'wp_enqueue_scripts', 'test_enqueue_script' );


The css work well, but the JS doesn't. Can anyone suggest a way for me to load an earlier version of jQuery onto a site that has a newer version of jQuery?

Any help would be greatly appreciated!