if (navigator.appVersion.indexOf("Win") != -1){document.write ("<LINK REL=stylesheet HREF=./css/win.css TYPE=text/css>")}
else{document.write ("<LINK REL=stylesheet HREF=./css/mac.css TYPE=text/css>")}

function switchImage(imgName, imgSrc) 
{
  if (document.images)
  {
    if (imgSrc != "none")
    {
      document.images[imgName].src = imgSrc;
    }
  }
}