gistfile1.js

String.format = (function(slice) {
  return function(template) {
    var args = slice.call(arguments, 1), i = args.length;
    while (i--) {
      template = template.replace(new RegExp('\\{' + i + '\\}', 'g'), args[i]);
    }
    return template;
  };
})(Array.prototype.slice);