Load jQuery in footer

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<?php
/**
 * Prints jQuery in footer on front-end.
 */
function ds_print_jquery_in_footer( &$scripts) {
	if ( ! is_admin() )
		$scripts->add_data( 'jquery', 'group', 1 );
}
add_action( 'wp_default_scripts', 'ds_print_jquery_in_footer' );

?>

Instructions:

By default WordPress has registered the jQuery library to load in the header.

This snippet changes this behaviour.

Related links:

http://wpgrafie.de/schnipsel/jquery-footer-wordpress/