function window_open (url,window_target) {
  var window_popup = window.open(url,window_target,"toolbar=yes,location=yes,directories=yes,status=yes,menubar=yes,scrollbars=yes,resizable=yes,favorites=yes");
  window_popup.focus();
}

function window_open_size (url,window_target,width,height) {
  var window_popup = window.open(url, window_target, "width=" +width+ ",height="+height);
  window_popup.focus();
}