var nav_aboutbasis_off = new Image();
  nav_aboutbasis_off.src = "/images/nav_aboutbasis_off.jpg";
  var nav_aboutbasis_over = new Image();
  nav_aboutbasis_over.src = "/images/nav_aboutbasis_over.jpg";
  
  var nav_products_off = new Image();
  nav_products_off.src = "/images/nav_products_off.jpg";
  var nav_products_over = new Image();
  nav_products_over.src = "/images/nav_products_over.jpg";


  var nav_application_directory_off = new Image();
  nav_application_directory_off.src = "/images/nav_application_directory_off.jpg";
  var nav_application_directory_over = new Image();
  nav_application_directory_over.src = "/images/nav_application_directory_over.jpg";
  
  var nav_sales_off = new Image();
  nav_sales_off.src = "/images/nav_sales_off.jpg";
  var nav_sales_over = new Image();
  nav_sales_over.src = "/images/nav_sales_over.jpg";
  
  var nav_reseller_dev_off = new Image();
  nav_reseller_dev_off.src = "/images/nav_reseller_dev_off.jpg";
  var nav_reseller_dev_over = new Image();
  nav_reseller_dev_over.src = "/images/nav_reseller_dev_over.jpg";

  var nav_support_off = new Image();
  nav_support_off.src = "/images/nav_support_off.jpg";
  var nav_support_over = new Image();
  nav_support_over.src = "/images/nav_support_over.jpg";
  
  var nav_events_off = new Image();
  nav_events_off.src = "/images/nav_events_off.jpg";
  var nav_events_over = new Image();
  nav_events_over.src = "/images/nav_events_over.jpg";