Unfiltered HTML plugin selected code to allow admin/editor js/script etc code in WPMU

unfiltered-html-mu.php

<?php
/* To allow unfiltered html for admin and editor */
function um_unfilter_roles() {
	// Makes sure $wp_roles is initialized
	get_role( 'administrator' );
	global $wp_roles;
	// Dont use get_role() wrapper, it doesn't work as a one off.
	// (get_role does not properly return as reference)
	$wp_roles->role_objects['administrator']->add_cap( 'unfiltered_html' );
	$wp_roles->role_objects['editor']->add_cap( 'unfiltered_html' );
}
add_action( 'admin_init', 'um_unfilter_roles');

// Add the unfiltered_html capability back in to WordPress 3.0 multisite.
function um_unfilter_multisite( $caps, $cap, $user_id, $args ) {
	if ( $cap == 'unfiltered_html' ) {
		unset( $caps );
		$caps[] = $cap;
	}
	return $caps;
}
add_filter( 'map_meta_cap', 'um_unfilter_multisite', 10, 4 );
/* To allow unfiltered html for admin and editor - ends */
?>