text:  // First, checks if it isn't implemented yet.
   if (!String.prototype.format) {
      String.prototype.format = function() {
        var args = arguments;
        return this.replace(/{(\d+)}/g, function(match, number) { 
          return typeof args[number] != 'undefined'
            ? args[number]
            : match
          ;
        });
      };
    }