// javascript rollover stuff 

  browserName = navigator.appName;
  browserVer = parseInt(navigator.appVersion);
  
  if (((browserName == "Netscape") && (browserVer >= 3)) || ((browserName == "Microsoft Internet Explorer") && (browserVer >= 4))) {
    version = "ok";

    home_on = new Image;   home_on.src = "images/left_navigation_bar_home-on.gif";
    home_off = new Image;  home_off.src = "images/left_navigation_bar_home-off.gif";

    technology_on = new Image;   technology_on.src = "images/left_navigation_bar_technology-on.gif";
    technology_off = new Image;  technology_off.src = "images/left_navigation_bar_technology-off.gif";    

    about_us_on = new Image;   about_us_on.src = "images/left_navigation_bar_about_us-on.gif";
    about_us_off = new Image;  about_us_off.src = "images/left_navigation_bar_about_us-off.gif";

    employment_on = new Image;   employment_on.src = "images/left_navigation_bar_employment-on.gif";
    employment_off = new Image;  employment_off.src = "images/left_navigation_bar_employment-off.gif";

    visiting_us_on = new Image;   visiting_us_on.src = "images/left_navigation_bar_visiting_us-on.gif";
    visiting_us_off = new Image;  visiting_us_off.src = "images/left_navigation_bar_visiting_us-off.gif";

    login_on = new Image;   login_on.src = "images/left_navigation_bar_login-on.gif";
    login_off = new Image;  login_off.src = "images/left_navigation_bar_login-off.gif";    

    items_for_sale_on = new Image;   items_for_sale_on.src = "images/left_navigation_bar_items_for_sale-on.gif";
    items_for_sale_off = new Image;  items_for_sale_off.src = "images/left_navigation_bar_items_for_sale-off.gif";

    contact_us_on = new Image;   contact_us_on.src = "images/left_navigation_bar_contact_us-on.gif";
    contact_us_off = new Image;  contact_us_off.src = "images/left_navigation_bar_contact_us-off.gif";

    
  }
  else 
    version = "x";

  function img_on(imgName) {
    if (version == "ok") {
       imgOn = eval(imgName + "_on.src");
       document [imgName].src = imgOn;
    }
  }
  function img_off(imgName) {
    if (version == "ok") {
      imgOff = eval(imgName + "_off.src");
      document [imgName].src = imgOff;
    }
  }