function showimage(Alinkname, Ahover) {
  var g = false;
  var imgdir = "images/";
  var newimgsrc = "";
  var newimgsrc2 = "";
  img = document.getElementById("img" + Alinkname);
  img2 = document.getElementById("img" + Alinkname + "2");
  if (g = (img != null && img2 != null)) {
    if ( Ahover ) {
      newimgsrc = imgdir + Alinkname + "hover.jpg";
      newimgsrc2 = imgdir + Alinkname + "2hover.jpg";
    } else {
      newimgsrc = imgdir + Alinkname + ".jpg";
      newimgsrc2 = imgdir + Alinkname + "2.jpg";
    }
    if ( img.src != newimgsrc ) {
      img.src = newimgsrc;
    }
    if ( img2.src != newimgsrc2 ) {
      img2.src = newimgsrc2;
    }
  }
  return false;
}