I really thought this would be a simple task to do. But my JavaScript code makes the browser loop the page indefinitely and I really don't know why. I've tried other solutions from stack overflow, but all of them gave the same result. Here is the code:
SOLVED! THANKS ALL!!!
I think now it's okay (code at the methark.com/br page):
<script>
var language = window.navigator.language || navigator.userLanguage;
var languageFistTwo = language.substr(0,1);
if(window.location.href == 'http://methark.com/br' && languageFistTwo == 'en'){
window.location.href = 'http://methark.com';
}
</script>