This method gets called on the admin_print_scripts hook. For some reason, the months array works on wp3.3 (trunk), but not on wp3.2.1.

gistfile1.aw

<?php

	function admin_print_scripts() {
		if( get_post_type() == $this->type || get_query_var('post_type') == $this->type ) :
			wp_enqueue_script( 'ads-admin' );
			
			// BEGIN hack to highlight expired/expiring ads
			$now = time();
			$expired_ads = get_posts(
				array(
					'post_type' => 'ads',
					'meta_query' => array(
						array(
							'key' => '_end_date',
							'value' => $now,
							'type' => 'numeric',
							'compare' => '<'
						)
					),
					'nopaging' => true
				)
			);
			$expired_selectors = array();
			foreach( $expired_ads as $expired_ad ) :
				$expired_selectors[] = '#post-'.$expired_ad->ID;
			endforeach;
			
			$expiring_ads = get_posts(
				array(
					'post_type' => 'ads',
					'meta_query' => array(
						array(
							'key' => '_end_date',
							'value' => array( $now, $now + ( 60 * 60 * 24 * 7 ) ),
							'type' => 'numeric',
							'compare' => 'BETWEEN'
						)
					),
					'nopaging' => true
				)
			);
			$expiring_selectors = array();
			foreach( $expiring_ads as $expiring_ad ) :
				$expiring_selectors[] = '#post-'.$expiring_ad->ID;
			endforeach;
			
			wp_localize_script(
				'ads-admin',
				'adsanity',
				array(
					'expired_ads' => implode( ', ', $expired_selectors ),
					'expiring_ads' => implode( ', ', $expiring_selectors ),
					'adsanity_eol' => ADSANITY_EOL,
					'months' => array(
						__( 'January',		'adsanity' ),
						__( 'February',		'adsanity' ),
						__( 'March',		'adsanity' ),
						__( 'April',		'adsanity' ),
						__( 'May',			'adsanity' ),
						__( 'June',			'adsanity' ),
						__( 'July',			'adsanity' ),
						__( 'August',		'adsanity' ),
						__( 'September',	'adsanity' ),
						__( 'October',		'adsanity' ),
						__( 'November',		'adsanity' ),
						__( 'December',		'adsanity' ),	
					)
				)
			);
			// END hack to highlight expired/expiring ads
		endif;
	}