if (document.images) {
	
  topnavhomeon = new Image();
  topnavhomeon.src = "images/topnav-home-on.jpg";

  topnavqualityassuranceon = new Image();
  topnavqualityassuranceon.src = "images/topnav-quality-assurance-on.jpg";

  topnavteamandserviceson = new Image();
  topnavteamandserviceson.src = "images/topnav-team-and-services-on.jpg";
  
  topnavtechinfoon = new Image();
  topnavtechinfoon.src = "images/topnav-tech-info-on.jpg";
  
  topnavcurrenttaskorderson = new Image();
  topnavcurrenttaskorderson.src = "images/topnav-current-task-orders-on.jpg";
  
  topnavpointsofcontacton = new Image();
  topnavpointsofcontacton.src = "images/topnav-points-of-contact-on.jpg";
      
   
  topnavhomeoff = new Image();
  topnavhomeoff.src = "images/topnav-home.jpg";

  topnavqualityassuranceoff = new Image();
  topnavqualityassuranceoff.src = "images/topnav-quality-assurance.jpg";

  topnavteamandservicesoff = new Image();
  topnavteamandservicesoff.src = "images/topnav-team-and-services.jpg";

  topnavtechinfooff = new Image();
  topnavtechinfooff.src = "images/topnav-tech-info.jpg";
  
  topnavcurrenttaskordersoff = new Image();
  topnavcurrenttaskordersoff.src = "images/topnav-current-task-orders.jpg";
  
  topnavpointsofcontactoff = new Image();
  topnavpointsofcontactoff.src = "images/topnav-points-of-contact.jpg";
  
}

function changeImages() {
  if (document.images) {
    for (var i=0; i<changeImages.arguments.length; i+=2) {
      document[changeImages.arguments[i]].src = eval(changeImages.arguments[i+1] + ".src");
    }
  }
}