if ( typeof window.$ != 'function' ) {
function $() {
  var elements = new Array();

  for (var i = 0; i < arguments.length; i++) {
    var element = arguments[i];
    if (typeof element == 'string')
      element = document.getElementById(element);

    if (arguments.length == 1)
      return element;

    elements.push(element);
  }

  return elements;
}
}

function openWithSelfMain(url,name,width,height,returnwindow) {
        var options = "width=" + width + ",height=" + height + ",toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,copyhistory=no";

        var new_window = window.open(url, name, options);
        window.self.name = "main";
        new_window.focus();
        if (returnwindow != null) {
           return new_window;
        }
}