wp-to-fb-locale.php

<?php
		// catch some weird locales served out by WP.
		$locales = array(
			'ar'=> 'ar_ar',
			'ca'=> 'ca_es',
			'en'=> 'en_us',
			'el'=> 'el_gr',
			'et'=> 'et_ee',
			'fi'=> 'fi_fi',
			'ja'=> 'ja_jp',
			'sq'=> 'sq_al',
			'uk'=> 'uk_ua',
			'vi'=> 'vi_vn',
			'zh'=> 'zh_cn'
		);
		
		if ( isset( $locales[ $locale ] ) ) 
			$locale = $locales[$locale];