L10n/BrowserLanguageSupport

Firefox4 Locales      | IE9 Locales
----------------      | ----------
af Afrikaans          | Afrikaans       
sq Albanian           | Albanian        
Bug 545994         | Amharic         
ar Arabic             | Arabic
hy-AM Armenian (beta) | Armenian        
as Assamese           | Assamese        
Bug 544383         | Azerbaijani     
                      | Bangla (Bangladesh) 
eu Basque             | Basque  
bn-IN Bengali         | Bengali (India) 
bn-BD Bengali         |
be Belarusian         |
bs Bosnian (beta)     | Bosnian (Cyrillic) 
                      | Bosnian (Latin) 
bg Bulgarian          | Bulgarian       
ca Catalan            | Catalan         
                      | Chinese (Hong Kong SAR)
zh-CN Chinese         | Chinese (Simplified) 
zh-TW Chinese         | Chinese (Traditional)
hr Croatian           | Croatian        
cs Czech              | Czech   
da Danish             | Danish  
nl Dutch              | Dutch   
en-GB English         | English (US)    
en-US English         |
en-ZA English         |
eo Esperanto          |
et Estonian           | Estonian        
in process            | Filipino        
fi Finnish            | Finnish         
fr French             | French  
fy-NL Frisian         |
gl Galician           | Galician        
ka Georgian           | Georgian        
de German             | German  
el Greek              | Greek   
gu-IN Gujarati        | Gujarati        
                      | Hausa   
he Hebrew             | Hebrew  
hi-IN Hindi           | Hindi (India)   
hu Hungarian          | Hungarian       
is Icelandic          | Icelandic       
                      | Igbo    
id Indonesian         | Indonesian      
                      | Inuktitut       
ga-IE Irish(Ireland)  | Irish   
it Italian            | Italian         
ja Japanese           | Japanese*       
kn Kannada            | Kannada         
kk Kazakh             | Kazakh  
in process            | Khmer   
                      | Kiswahili       
                      | Konkani         
ko Korean             | Korean  
                      | Kyrgyz  
lv Latvian            | Latvian         
lt Lithuanian         | Lithuanian      
                      | Luxembourgish   
mk Macedonian         | Macedonian      
                      | Malay (Brunei Darussalam)
actively recruiting   | Malay (Malaysia)
ml Malayalam          | Malayalam
                      | Maltese
                      | Maori
mr Marathi            | Marathi
                      | Nepali
nb-NO Norwegian       | Norwegian (Bokmål) 
nn-NO Norwegian       | Norwegian (Nynorsk)
oc Occitan(Lengadocia |
or Oriya  (beta)      | Oriya
fa Persian (beta)     | Persian
pl Polish             | Polish  
pt-BR Portuguese      | Portuguese (Brazilian
pt-PT Portuguese      | Portuguese (Portugal)
pa-IN Punjabi         | Punjabi
                      | Quechua
ro Romanian           | Romanian        
ru Russian            | Russian         
sr Serbian            | Serbian (Cyrillic)
                      | Serbian (Latin) 
                      | Sesotho
                      | Setswana
si Sinhala            | Sinhala
sk Slovak             | Slovak  
sl Slovenian          | Slovenian       
es-AR Spanish         | Spanish (Spain) 
es-ES Spanish         |
sv-SE Swedish         | Swedish         
ta Tamil (beta)       | Tamil
ta-LK Tamil(SriLanka) | 
                      | Tatar
te Telugu             | Telugu
th Thai               | Thai    
tr Turkish            | Turkish         
uk Ukrainian          | Ukrainian       
                      | Urdu
                      | Uzbek
vi Vietnamese         | Vietnamese      
cy Welsh              | Welsh
                      | Yoruba
                      | isiXhosa        
                      | isiZulu         
others in beta        <
ak Akan               <
ast Asturian          <
br Breton             <
en-ZA English         <
gd Gaelic             <
ku Kurdish            <
lg Luganda            <
mai Maithili          <
nso Northern          <
rm Romansh            <
son Songhai           <
es-CL Spanish(Chile)  <
es-MX Spanish         <
zu Zulu               <