var navigator_name = navigator.appName;
  var navigator_ver  = navigator.appVersion;
  var js_ver = 0;
  var lButton;

  // Browser detection
  if (navigator_name.indexOf("Netscape") != -1) {
    if (navigator_ver.indexOf("3") != -1) { js_ver = 1.2; } else
    { js_ver = 1.3; }
  }
  if (navigator_name.indexOf("Microsoft") != -1) {
    if (navigator_ver.indexOf("MSIE 4") != -1) { js_ver = 1.2; } else
    { js_ver = 1.3; }
  }

  function MakeButton(width,height,img_normal,img_highlt,img_text) {
    if (js_ver < 1.2) { return; }
    this.normal = new Image(width,height);  this.normal.src = img_normal;
    this.highlt = new Image(width,height);  this.highlt.src = img_highlt;
    this.text = img_text;
  }

  function SetButton(ImageNum,State) {
    if (js_ver < 1.2) { return; }
    ImageName = "button" + ImageNum;
    if (State) { document.images[ImageName].src = lButton[ImageNum].highlt.src;  window.status = lButton[ImageNum].text; }
    else       { document.images[ImageName].src = lButton[ImageNum].normal.src;  window.status = " "; }
  }

  function ClickButton( ) {
    return true;
  }

  function SetupButtons( ) {
    if (js_ver < 1.2) { return; }
    lButton = new Array(4);
    // MakeButton(width,height,img_normal,img_highlt,img_text);
    lButton[1] = new MakeButton(214, 72, "product_line.gif",    "product_line_2.gif",    "Product Line");
    lButton[2] = new MakeButton(278, 72, "company_profile.gif", "company_profile_2.gif", "Company Profile");
    lButton[3] = new MakeButton(194, 72, "contact_us.gif",      "contact_us_2.gif",      "Contact Us");
  }  

  SetupButtons( );