function get_banner(b_id, b_size, b_view) {
  switch (arguments.length) { 
    case 0: b_id = ""; 
    case 1: b_size = 0; 
    case 2: b_view = 0; 
  }
  var b_url = "/banner/banner.cfm";
  var b_pars = "size=" + b_size + "&view=" + b_view;
  var b_options = {};
  b_options.method = "get";
  b_options.asynchronous = true;
  b_options.parameters = b_pars;
  new Ajax.Updater(b_id, b_url, b_options);
}