transliterate string given a table conversion

transliterate.js

// transliterate (Char a) :: [a] -> [a] -> [a] -> [a]
var transliterate = function(from, to) {
  var approximations = {};

  for (var i = 0, len = from.length; i < len; ++i) {
    approximations[from.charAt(i)] = to.charAt(i);
  }

  return function(input) {
    return input.replace(/[^\x00-\x7f]/g, function(char) {
      return approximations[char];
    });
  };
};

var tr = transliterate;

var characteresToReplace = "ãàáäâèéëêìíïîòóöôùúüûñç"
  , replacements         = "aaaaaeeeeiiiioooouuuunc";

var removeAccents = tr(characteresToReplace, replacements);
removeAccents("ãàáäâèéëêìíïîòóöôùúüûñç"); // => aaaaaeeeeiiiioooouuuunc