function preloadImages()
    {
      if (document.images)
      {

        bt01_home = new Image();
	bt01_home.src = "/eng/images/bt01_home.gif";
	bt01_home_hl = new Image();
	bt01_home_hl.src = "/eng/images/bt01_home_hl.gif";

        bt02_mfm = new Image();
	bt02_mfm.src = "/eng/images/bt02_mfm.gif";
	bt02_mfm_hl = new Image();
	bt02_mfm_hl.src = "/eng/images/bt02_mfm_hl.gif";

        bt03_services = new Image();
	bt03_services.src = "/eng/images/bt03_services.gif";
	bt03_services_hl = new Image();
	bt03_services_hl.src = "/eng/images/bt03_services_hl.gif";

        bt04_contact = new Image();
	bt04_contact.src = "/eng/images/bt04_contact.gif";
	bt04_contact_hl = new Image();
	bt04_contact_hl.src = "/eng/images/bt04_contact_hl.gif";

        bt05_collabo = new Image();
	bt05_collabo.src = "/eng/images/bt05_collabo.gif";
	bt05_collabo_hl = new Image();
	bt05_collabo_hl.src = "/eng/images/bt05_collabo_hl.gif";

        bt06_langue = new Image();
	bt06_langue.src = "/eng/images/bt06_langue.gif";
	bt06_langue_hl = new Image();
	bt06_langue_hl.src = "/eng/images/bt06_langue_hl.gif";

        home_photo1 = new Image();
	home_photo1.src = "/eng/images/home_photo1.jpg";
	home_photo1_hl = new Image();
	home_photo1_hl.src = "/eng/images/home_photo1_hl.jpg";

        home_photo2 = new Image();
	home_photo2.src = "/eng/images/home_photo2.jpg";
	home_photo2_hl = new Image();
	home_photo2_hl.src = "/eng/images/home_photo2_hl.jpg";

      }
 
    }
    function switchImage(name,image)
    {
      if (document.images){document[name].src = image.src; }
    }