// ROLLOVER

if (document.images) { 
  img1on = new Image();
  img1on.src =  '../images/topnav_about_on.gif';    
  img2on = new Image();
  img2on.src =  '../images/topnav_services_on.gif'; 
  img3on = new Image();
  img3on.src =  '../images/topnav_process_on.gif';
  img4on = new Image();
  img4on.src =  '../images/topnav_cases_on.gif';
  img5on = new Image();
  img5on.src =  '../images/topnav_notices_on.gif';
  img6on = new Image();
  img6on.src =  '../images/topnav_facilities_on.gif';
  img7on = new Image();
  img7on.src =  '../images/topnav_news_on.gif';
  img8on = new Image();
  img8on.src =  '../images/leftnav_why_on.gif';    
  img9on = new Image();
  img9on.src =  '../images/leftnav_resources_on.gif'; 
  img10on = new Image();
  img10on.src =  '../images/leftnav_careers_on.gif';
  img11on = new Image();
  img11on.src =  '../images/leftnav_contact_on.gif';
  img12on = new Image();
  img12on.src =  '../images/leftnav_talk_on.gif';
  
  img1off = new Image();
  img1off.src = '../images/topnav_about_off.gif';
  img2off = new Image();
  img2off.src = '../images/topnav_services_off.gif';
  img3off = new Image();
  img3off.src = '../images/topnav_process_off.gif';
  img4off = new Image();
  img4off.src = '../images/topnav_cases_off.gif';
  img5off = new Image();
  img5off.src = '../images/topnav_notices_off.gif';
  img6off = new Image();
  img6off.src = '../images/topnav_facilities_off.gif';
  img7off = new Image();
  img7off.src = '../images/topnav_news_off.gif';
  img8off = new Image();
  img8off.src = '../images/leftnav_why_off.gif';
  img9off = new Image();
  img9off.src = '../images/leftnav_resources_off.gif';
  img10off = new Image();
  img10off.src = '../images/leftnav_careers_off.gif';
  img11off = new Image();
  img11off.src = '../images/leftnav_contact_off.gif';
  img12off = new Image();
  img12off.src = '../images/leftnav_talk_off.gif';
}

function imgOn(imgName) {
  if (document.images) {
    document[imgName].src = eval(imgName + "on.src");
  } 
}

function imgOff(imgName) {
  if (document.images) {
    document[imgName].src = eval(imgName + "off.src");
  }
}