To disable messy plugin from loading on every page of your site (just on the pages that need it)…

First find the handle — Open the php for the script you want to turn off and look for where it adds itself via enqueue_script

wp_enqueue_script(‘wpng-calendar‘, get_bloginfo(‘wpurl’) . ‘/wp-content/plugins/wpng-calendar/js/functions.js’, array(‘date-js’), ’0.85′);

(if the plugin doesn’t use enqueue_script then you may be out of luck)

Then add this to your functions.php file:

add_action( 'wp_print_scripts', 'my_deregister_javascript', 100 ); 
function my_deregister_javascript() {
if ( !is_page('Events') ) {
wp_deregister_script( 'wpng-calendar' );
wp_deregister_script( 'date-js' );
wp_deregister_script( 'thickbox-js' );
wp_deregister_script( 'jquery-js' );
wp_deregister_script( 'wiky-js' );
}
}

If you need to show the plugin on multiple pages, change the if line to this:

if ( !is_page(array(2,'events','about-us')) ) {