// primary nav over images
  over_home = new Image;
  over_home.src = "images/nav/home_over.gif";
  over_useful_info = new Image;
  over_useful_info.src = "images/nav/useful_info_over.gif";
  over_call = new Image;
  over_call.src = "images/nav/call_back_over.gif";
  over_faqs = new Image;
  over_faqs.src = "images/nav/faqs_over.gif";
  over_about = new Image;
  over_about.src = "images/nav/about_over.gif";
  over_contact = new Image;
  over_contact.src = "images/nav/contact_over.gif";
  
  
// primary nav off images
  off_home = new Image;
  off_home.src = "images/nav/home_off.gif";
  off_useful_info = new Image;
  off_useful_info.src = "images/nav/useful_info_off.gif";
  off_call = new Image;
  off_call.src = "images/nav/call_back_off.gif";
  off_faqs = new Image;
  off_faqs.src = "images/nav/faqs_off.gif";
  off_about = new Image;
  off_about.src = "images/nav/about_off.gif";
  off_contact = new Image;
  off_contact.src = "images/nav/contact_off.gif";


// primary nav on images
  on_home = new Image;
  on_home.src = "images/nav/home_on.gif";
  on_useful_info = new Image;
  on_useful_info.src = "images/nav/useful_info_on.gif";
  on_call = new Image;
  on_call.src = "images/nav/call_back_on.gif";
  on_faqs = new Image;
  on_faqs.src = "images/nav/faqs_on.gif";
  on_about = new Image;
  on_about.src = "images/nav/about_on.gif";
  on_contact = new Image;
  on_contact.src = "images/nav/contact_on.gif";


// function for the rollovers
  function ImgFunc(imgDocID, imgObjName) {
      document.images[imgDocID].src = eval(imgObjName + ".src")
}