<!--

  browser = navigator.appName;
  browserNum = parseInt(navigator.appVersion);

  if ((browser == "Netscape") && (browserNum < 5))
  {
   layerRef = "document.layers['";
   endLayerRef = "']";
   style = "";
  }
  else if ((browser == "Netscape") && (browserNum >= 5))
  {
   layerRef = "document.getElementById('";
   styleRef = ".style";
   endLayerRef = "')";
  }
   else
  {
   layerRef = "document.all['";
   endLayerRef = "']";
   styleRef = ".style";
  }

  last_menu = "about";

function swap_img(img,src) {
  eval("document.images."+img+".src='/images/"+src+"'");
 }

function show_about() {
  swap_img('menu4x1','background/4x1_on.jpg');  
  swap_img('menu4x2','background/4x2_off.jpg');  
  swap_img('menu4x3','background/4x3_off.jpg');  
  swap_img('menu4x4','background/4x4_off.jpg');  
  swap_img('contact_button','contact_button_off.jpg');  
  eval(layerRef + "layer_capabilities" + endLayerRef + styleRef + ".visibility = 'hidden'");
  eval(layerRef + "layer_shopping" + endLayerRef + styleRef + ".visibility = 'hidden'");
  eval(layerRef + "layer_demos" + endLayerRef + styleRef + ".visibility = 'hidden'");
  eval(layerRef + "layer_loading" + endLayerRef + styleRef + ".visibility = 'hidden'");
  eval(layerRef + "layer_contact" + endLayerRef + styleRef + ".visibility = 'hidden'");
  eval(layerRef + "layer_about" + endLayerRef + styleRef + ".visibility = 'visible'");
  last_menu = "about";
  reset_about();
 }

function reset_about() {
  swap_img('about1','about1_off.jpg');  
  swap_img('about2','about2_off.jpg');  
  swap_img('about3','about3_off.jpg');  
 }

function show_shopping() {
  swap_img('menu4x1','background/4x1_off.jpg');  
  swap_img('menu4x2','background/4x2_on.jpg');  
  swap_img('menu4x3','background/4x3_off.jpg');  
  swap_img('menu4x4','background/4x4_off.jpg');  
  swap_img('contact_button','contact_button_off.jpg');  
  eval(layerRef + "layer_about" + endLayerRef + styleRef + ".visibility = 'hidden'");
  eval(layerRef + "layer_capabilities" + endLayerRef + styleRef + ".visibility = 'hidden'");
  eval(layerRef + "layer_demos" + endLayerRef + styleRef + ".visibility = 'hidden'");
  eval(layerRef + "layer_loading" + endLayerRef + styleRef + ".visibility = 'hidden'");
  eval(layerRef + "layer_contact" + endLayerRef + styleRef + ".visibility = 'hidden'");
  eval(layerRef + "layer_shopping" + endLayerRef + styleRef + ".visibility = 'visible'");
  last_menu = "shopping";
  reset_shopping();
 }

function reset_shopping() {
  swap_img('shopping1','shopping1_off.jpg');  
  swap_img('shopping2','shopping2_off.jpg');  
  swap_img('shopping3','shopping3_off.jpg');  
  swap_img('shopping4','shopping4_off.jpg');  
  swap_img('shopping5','shopping5_off.jpg');  
  swap_img('shopping6','shopping6_off.jpg');  
  swap_img('shopping7','shopping7_off.jpg');  
  swap_img('shopping8','shopping8_off.jpg');  
  swap_img('shopping9','shopping9_off.jpg');  
  swap_img('shopping10','shopping10_off.jpg');  
 }

function show_capabilities() {
  swap_img('menu4x1','background/4x1_off.jpg');  
  swap_img('menu4x2','background/4x2_off.jpg');  
  swap_img('menu4x3','background/4x3_on.jpg');  
  swap_img('menu4x4','background/4x4_off.jpg');  
  swap_img('contact_button','contact_button_off.jpg');  
  eval(layerRef + "layer_about" + endLayerRef + styleRef + ".visibility = 'hidden'");
  eval(layerRef + "layer_shopping" + endLayerRef + styleRef + ".visibility = 'hidden'");
  eval(layerRef + "layer_demos" + endLayerRef + styleRef + ".visibility = 'hidden'");
  eval(layerRef + "layer_loading" + endLayerRef + styleRef + ".visibility = 'hidden'");
  eval(layerRef + "layer_contact" + endLayerRef + styleRef + ".visibility = 'hidden'");
  eval(layerRef + "layer_capabilities" + endLayerRef + styleRef + ".visibility = 'visible'");
  last_menu = "capabilities";
  reset_capabilities();
 }

function reset_capabilities() {
  swap_img('capabilities1','capabilities1_off.jpg');  
  swap_img('capabilities2','capabilities2_off.jpg');  
  swap_img('capabilities3','capabilities3_off.jpg');  
 }

function show_demos() {
  swap_img('menu4x1','background/4x1_off.jpg');  
  swap_img('menu4x2','background/4x2_off.jpg');  
  swap_img('menu4x3','background/4x3_off.jpg');  
  swap_img('menu4x4','background/4x4_on.jpg');  
  swap_img('contact_button','contact_button_off.jpg');  
  eval(layerRef + "layer_about" + endLayerRef + styleRef + ".visibility = 'hidden'");
  eval(layerRef + "layer_shopping" + endLayerRef + styleRef + ".visibility = 'hidden'");
  eval(layerRef + "layer_capabilities" + endLayerRef + styleRef + ".visibility = 'hidden'");
  eval(layerRef + "layer_loading" + endLayerRef + styleRef + ".visibility = 'hidden'");
  eval(layerRef + "layer_contact" + endLayerRef + styleRef + ".visibility = 'hidden'");
  eval(layerRef + "layer_demos" + endLayerRef + styleRef + ".visibility = 'visible'");
  last_menu = "demos";
  reset_demos();
 }

function reset_demos() {
  swap_img('demos1','demos1_off.jpg');  
  swap_img('demos2','demos2_off.jpg');  
 }

function show_contact() {
//  swap_img('menu4x1','background/4x1_off.jpg');  
//  swap_img('menu4x2','background/4x2_off.jpg');  
//  swap_img('menu4x3','background/4x3_off.jpg');  
//  swap_img('menu4x4','background/4x4_off.jpg');  
  swap_img('contact_button','contact_button_on.jpg');  
//  eval(layerRef + "layer_about" + endLayerRef + styleRef + ".visibility = 'hidden'");
//  eval(layerRef + "layer_shopping" + endLayerRef + styleRef + ".visibility = 'hidden'");
//  eval(layerRef + "layer_capabilities" + endLayerRef + styleRef + ".visibility = 'hidden'");
//  eval(layerRef + "layer_demos" + endLayerRef + styleRef + ".visibility = 'hidden'");
//  eval(layerRef + "layer_loading" + endLayerRef + styleRef + ".visibility = 'hidden'");
//  eval(layerRef + "layer_contact" + endLayerRef + styleRef + ".visibility = 'visible'");
 }

function hide_contact() {
  swap_img('contact_button','contact_button_off.jpg');  
//  switch (last_menu) {
//    case "shopping":
//      show_shopping();
//    break
//    case "capabilities":
//      show_capabilities();
//    break
//    case "demos":
//      show_demos();
//    break
//    default:
//      show_about();
//    break
//  }
 }

-->