// A KHTML bug.
if ("".replace(/^/, K("$$")) == "$") {
  extend(String.prototype, "replace", function(expression, replacement) {
    if (typeof replacement == "function") {
      var fn = replacement;
      replacement = function() {
        return String(fn.apply(null, arguments)).split("$").join("$$");
      };
    }
    return this.base(expression, replacement);
  });
}