var nav_bbxgenerations_off = new Image();
  nav_bbxgenerations_off.src = "/images/nav_bbxgenerations_off.gif";
  var nav_bbxgenerations_over = new Image();
  nav_bbxgenerations_over.src = "/images/nav_bbxgenerations_over.gif";

  var nav_lanint_off = new Image();
  nav_lanint_off.src = "/images/nav_lanint_off.gif";
  var nav_lanint_over = new Image();
  nav_lanint_over.src = "/images/nav_lanint_over.gif";

  var nav_dbms_off = new Image();
  nav_dbms_off.src = "/images/nav_dbms_off.gif";
  var nav_dbms_over = new Image();
  nav_dbms_over.src = "/images/nav_dbms_over.gif";

  var nav_developmenttools_off = new Image();
  nav_developmenttools_off.src = "/images/nav_developmenttools_off.gif";
  var nav_developmenttools_over = new Image();
  nav_developmenttools_over.src = "/images/nav_developmenttools_over.gif";

  var nav_sysadmin_off = new Image();
  nav_sysadmin_off.src = "/images/nav_sysadmin_off.gif";
  var nav_sysadmin_over = new Image();
  nav_sysadmin_over.src = "/images/nav_sysadmin_over.gif";

  var nav_documentation_off = new Image();
  nav_documentation_off.src = "/images/nav_documentation_off.gif";
  var nav_documentation_over = new Image();
  nav_documentation_over.src = "/images/nav_documentation_over.gif";

  var nav_csu_off = new Image();
  nav_csu_off.src = "/images/nav_csu_off.gif";
  var nav_csu_over = new Image();
  nav_csu_over.src = "/images/nav_csu_over.gif";

  var nav_licensing_off = new Image();
  nav_licensing_off.src = "/images/nav_licensing_off.gif";
  var nav_licensing_over = new Image();
  nav_licensing_over.src = "/images/nav_licensing_over.gif";

  var nav_downloads_off = new Image();
  nav_downloads_off.src = "/images/nav_downloads_off.gif";
  var nav_downloads_over = new Image();
  nav_downloads_over.src = "/images/nav_downloads_over.gif";

  var nav_platformavail_off = new Image();
  nav_platformavail_off.src = "/images/nav_platformavail_off.gif";
  var nav_platformavail_over = new Image();
  nav_platformavail_over.src = "/images/nav_platformavail_over.gif";