if (document.images) {
   tn_shop_on            = new Image();
   tn_shop_on.src        = "/images/shop_white.gif";
   tn_search_on          = new Image();
   tn_search_on.src      = "/images/search_white.gif";
   tn_contactHome_on     = new Image();
   tn_contactHome_on.src = "/images/contactHome_white.gif";
   tn_contact_on         = new Image();
   tn_contact_on.src     = "/images/contact_white.gif";
   tn_home_on            = new Image();
   tn_home_on.src        = "/images/home_white.gif";
   top_of_page_on        = new Image();
   top_of_page_on.src    = "/images/top_of_page_white.gif";

   tn_shop_off           = new Image();
   tn_shop_off.src       = "/images/shop.gif";
   tn_search_off         = new Image();
   tn_search_off.src     = "/images/search.gif";
   tn_contactHome_off    = new Image();
   tn_contactHome_off.src = "/images/contactHome.gif";
   tn_contact_off        = new Image();
   tn_contact_off.src    = "/images/contact.gif";
   tn_home_off           = new Image();
   tn_home_off.src       = "/images/home.gif";
   top_of_page_off       = new Image();
   top_of_page_off.src   = "/images/top_of_page.gif";

   tn_products_on        = new Image();
   tn_products_on.src    = "/images/products_white.gif";
   tn_support_on         = new Image();
   tn_support_on.src     = "/images/services_support_white.gif";
   tn_downloads_on       = new Image();
   tn_downloads_on.src   = "/images/downloads_white.gif";
   tn_speech_on          = new Image();
   tn_speech_on.src      = "/images/speech_white.gif";
   tn_links_on           = new Image();
   tn_links_on.src       = "/images/links_white.gif";
   tn_comments_on        = new Image();
   tn_comments_on.src    = "/images/comments_white.gif";
   tn_freestuff_on       = new Image();
   tn_freestuff_on.src   = "/images/freestuff_white.gif";

   tn_products_off       = new Image();
   tn_products_off.src   = "/images/products.gif";
   tn_support_off        = new Image();
   tn_support_off.src    = "/images/services_support.gif";
   tn_downloads_off      = new Image();
   tn_downloads_off.src  = "/images/downloads.gif";
   tn_speech_off         = new Image();
   tn_speech_off.src     = "/images/speech.gif";
   tn_links_off          = new Image();
   tn_links_off.src      = "/images/links.gif";
   tn_comments_off       = new Image();
   tn_comments_off.src   = "/images/comments.gif";
   tn_freestuff_off      = new Image();
   tn_freestuff_off.src  = "/images/freestuff.gif";
}

function tnImgOn(imgName) {

}

function tnImgOff(imgName) {

}

function tnCopyOn(imgName) {

}

function tnCopyOff(imgName) {

}