function openWindow(theURL,winName,features) {
  window.open(theURL,winName,features);
}

function plainWindow(theURL,winName,width,height, features) {
  wleft = (screen.width - width) / 2;
  wtop = (screen.height - height) / 2;
  window.open(theURL,winName, 'width='+width+' height='+height+' left='+wleft+' top='+wtop+' '+features + ' directories=no, location=no, menubar=no, resizable=no, status=no, toolbar=no');
}