function doWindowOpen(win_url,switchem,win_name,win_features) {
  var new_win;
  if (switchem) {
  	new_win = window.open(win_url, win_name, win_features);
  } else {
  	new_win = window.open(win_url, 'newWin', 'width=650,height=480,menubar=1,toolbar=1,scrollbars=1,status=1,location=1,resizable=1');
  }
  new_win.focus();
  return false;
}

// usage
// ---------------
// standard window:
// <a href="/tools/blio.cfm" onClick="return doWindowOpen('/tools/blio.cfm', 0);" title="Blio">Blio!</a>

// custom window:
// <a href="http://www.wired.com/" onClick="return doWindowOpen('http://www.wired.com/', 1, 'mine','width=300,height=300,menubar=0,toolbar=0,scrollbars=0,status=0,location=0,resizable=0')" title="Wired">Wired!</a>