That is would propably be a bit easier. I used this in my category template before the </head> tag:
Code:
<%if Full_Name like 'World'%>
<%if Full_Name like 'World/Afrikaans'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1">
<%elsif Full_Name like 'World/Arabic'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=WINDOWS-1256">
<%elsif Full_Name like 'World/Armenian'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ARMSCII-8">
<%elsif Full_Name like 'World/Bangla'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8">
<%elsif Full_Name like 'World/Belarusian'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=KOI8-F">
<%elsif Full_Name like 'World/Bosnian'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=WINDOWS-1250">
<%elsif Full_Name like 'World/Bulgarian'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ARRAY(0X421AD4)">
<%elsif Full_Name like 'World/Català'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1">
<%elsif Full_Name like 'World/Chinese'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=BIG5">
<%elsif Full_Name like 'World/Croatian'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-2">
<%elsif Full_Name like 'World/Cymraeg'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1">
<%elsif Full_Name like 'World/Czech'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=WINDOWS-1250">
<%elsif Full_Name like 'World/Dansk'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1">
<%elsif Full_Name like 'World/Deutsch'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1">
<%elsif Full_Name like 'World/Eesti'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=WINDOWS-1257">
<%elsif Full_Name like 'World/Español'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1">
<%elsif Full_Name like 'World/Esperanto'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-3">
<%elsif Full_Name like 'World/Euskara'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1">
<%elsif Full_Name like 'World/Faroese'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1">
<%elsif Full_Name like 'World/Farsi'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8">
<%elsif Full_Name like 'World/Français'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1">
<%elsif Full_Name like 'World/Frysk'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1">
<%elsif Full_Name like 'World/Gaeilge'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1">
<%elsif Full_Name like 'World/Galego'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1">
<%elsif Full_Name like 'World/Greek'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=WINDOWS-1253">
<%elsif Full_Name like 'World/Hebrew'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-8">
<%elsif Full_Name like 'World/Hindi'%>
<%elsif Full_Name like 'World/Indonesia'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1">
<%elsif Full_Name like 'World/Íslenska'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1">
<%elsif Full_Name like 'World/Italiano'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1">
<%elsif Full_Name like 'World/Japanese'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=EUC-JP">
<%elsif Full_Name like 'World/Kiswahili'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8">
<%elsif Full_Name like 'World/Korean'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=EUC-KR">
<%elsif Full_Name like 'World/Latvian'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=WINDOWS-1257">
<%elsif Full_Name like 'World/Lëtzebuergesch'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1">
<%elsif Full_Name like 'World/Lietuviu'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=WINDOWS-1257">
<%elsif Full_Name like 'World/Lingua Latina'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1">
<%elsif Full_Name like 'World/Magyar'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-2">
<%elsif Full_Name like 'World/Malaysian'%>
<%elsif Full_Name like 'World/Marathi'%>
<%elsif Full_Name like 'World/Nederlands'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1">
<%elsif Full_Name like 'World/Norsk'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1">
<%elsif Full_Name like 'World/Polska'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-2">
<%elsif Full_Name like 'World/Português'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1">
<%elsif Full_Name like 'World/Românã'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-2">
<%elsif Full_Name like 'World/Rumantsch'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1">
<%elsif Full_Name like 'World/Russian'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=KOI8-R">
<%elsif Full_Name like 'World/Serbian'%>
<%elsif Full_Name like 'World/Shqip'%>
<%elsif Full_Name like 'World/Simplified Chinese'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=GB2312">
<%elsif Full_Name like 'World/Slovensko'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=WINDOWS-1250">
<%elsif Full_Name like 'World/Slovensky'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-2">
<%elsif Full_Name like 'World/Suomi'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1">
<%elsif Full_Name like 'World/Svenska'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1">
<%elsif Full_Name like 'World/Tagalog'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1">
<%elsif Full_Name like 'World/Taiwanese'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=BIG5">
<%elsif Full_Name like 'World/Tamil'%>
<%elsif Full_Name like 'World/Telugu'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1">
<%elsif Full_Name like 'World/Thai'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=TIS-620">
<%elsif Full_Name like 'World/Türkçe'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-9">
<%elsif Full_Name like 'World/Ukrainian'%>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=WINDOWS-1251">
<%endif%>
<%endif%>