<!--

  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";
  }


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

function show_about() {
  swap_img('sub2x2','2x2_on.jpg');  
  swap_img('sub2x3','2x3_off.jpg');  
  swap_img('sub2x4','2x4_off.jpg');  
  swap_img('sub2x5','2x5_off.jpg');  
  eval(layerRef + "layer_submenu_about" + endLayerRef + styleRef + ".visibility = 'visible'");
  eval(layerRef + "layer_submenu_shopping" + endLayerRef + styleRef + ".visibility = 'hidden'");
  eval(layerRef + "layer_submenu_capabilities" + endLayerRef + styleRef + ".visibility = 'hidden'");
  eval(layerRef + "layer_submenu_demos" + endLayerRef + styleRef + ".visibility = 'hidden'");
  reset_about();
 }

function hide_about() {
// eval(layerRef + "layer_submenu_about" + endLayerRef + styleRef + ".visibility = 'hidden'");
// show_category();
 }

function reset_about() {
  swap_img('nav1x1','nav1x1_off.gif');  
  swap_img('nav1x2','nav1x2_off.gif');  
  swap_img('nav1x3','nav1x3_off.gif');  
 }

function show_shopping() {
  swap_img('sub2x2','2x2_off.jpg');  
  swap_img('sub2x3','2x3_on.jpg');  
  swap_img('sub2x4','2x4_off.jpg');  
  swap_img('sub2x5','2x5_off.jpg');  
  eval(layerRef + "layer_submenu_about" + endLayerRef + styleRef + ".visibility = 'hidden'");
  eval(layerRef + "layer_submenu_shopping" + endLayerRef + styleRef + ".visibility = 'visible'");
  eval(layerRef + "layer_submenu_capabilities" + endLayerRef + styleRef + ".visibility = 'hidden'");
  eval(layerRef + "layer_submenu_demos" + endLayerRef + styleRef + ".visibility = 'hidden'");
  reset_shopping();
 }

function hide_shopping() {
//  eval(layerRef + "layer_submenu_shopping" + endLayerRef + styleRef + ".visibility = 'hidden'");
//  show_category();
 }

function reset_shopping() {
  swap_img('nav2x1','nav2x1_off.gif');  
  swap_img('nav2x2','nav2x2_off.gif');  
  swap_img('nav2x3','nav2x3_off.gif');  
  swap_img('nav2x4','nav2x4_off.gif');  
  swap_img('nav2x5','nav2x5_off.gif');  
  swap_img('nav2x6','nav2x6_off.gif');  
  swap_img('nav2x7','nav2x7_off.gif');  
  swap_img('nav2x8','nav2x8_off.gif');  
  swap_img('nav2x9','nav2x9_off.gif');  
  swap_img('nav2x10','nav2x10_off.gif');  
 }

function show_capabilities() {
  swap_img('sub2x2','2x2_off.jpg');  
  swap_img('sub2x3','2x3_off.jpg');  
  swap_img('sub2x4','2x4_on.jpg');  
  swap_img('sub2x5','2x5_off.jpg');  
  eval(layerRef + "layer_submenu_about" + endLayerRef + styleRef + ".visibility = 'hidden'");
  eval(layerRef + "layer_submenu_shopping" + endLayerRef + styleRef + ".visibility = 'hidden'");
  eval(layerRef + "layer_submenu_capabilities" + endLayerRef + styleRef + ".visibility = 'visible'");
  eval(layerRef + "layer_submenu_demos" + endLayerRef + styleRef + ".visibility = 'hidden'");
  reset_capabilities();
 }

function hide_capabilities() {
//  eval(layerRef + "layer_submenu_capabilities" + endLayerRef + styleRef + ".visibility = 'hidden'");
//  show_category();
 }

function reset_capabilities() {
  swap_img('nav3x1','nav3x1_off.gif');  
  swap_img('nav3x2','nav3x2_off.gif');  
  swap_img('nav3x3','nav3x3_off.gif');  
 }

function show_demos() {
  swap_img('sub2x2','2x2_off.jpg');  
  swap_img('sub2x3','2x3_off.jpg');  
  swap_img('sub2x4','2x4_off.jpg');  
  swap_img('sub2x5','2x5_on.jpg');  
  eval(layerRef + "layer_submenu_about" + endLayerRef + styleRef + ".visibility = 'hidden'");
  eval(layerRef + "layer_submenu_shopping" + endLayerRef + styleRef + ".visibility = 'hidden'");
  eval(layerRef + "layer_submenu_capabilities" + endLayerRef + styleRef + ".visibility = 'hidden'");
  eval(layerRef + "layer_submenu_demos" + endLayerRef + styleRef + ".visibility = 'visible'");
}

function hide_demos() {
//  show_category();
}

function reset_demos() {
  swap_img('nav4x1','nav4x1_off.gif');  
  swap_img('nav4x2','nav4x2_off.gif');  
 }

function hide_all() {
  eval(layerRef + "layer_submenu_about" + endLayerRef + styleRef + ".visibility = 'hidden'");
  eval(layerRef + "layer_submenu_shopping" + endLayerRef + styleRef + ".visibility = 'hidden'");
  eval(layerRef + "layer_submenu_capabilities" + endLayerRef + styleRef + ".visibility = 'hidden'");
  eval(layerRef + "layer_submenu_demos" + endLayerRef + styleRef + ".visibility = 'hidden'");
  show_category();
 }

-->