if (document.images) {
     contact_on = new Image(13,17);
     contact_on.src = "/images/about/navabout_contacts_on.gif";
     steering_on = new Image(13,17);
     steering_on.src = "/images/about/navabout_steering_on.gif";
     metadata_on = new Image(13,17);
     metadata_on.src = "/images/about/navabout_metadata_on.gif";
     canri_prog_on = new Image(13,17);
     canri_prog_on.src = "/images/about/navabout_canriprogram_on.gif";
     canri_comm_on = new Image(13,17);
     canri_comm_on.src = "/images/about/navabout_canricomm_on.gif";

       
     contact_off = new Image(13,17);
     contact_off.src = "/images/about/navabout_contacts_off.gif";
     steering_off = new Image(13,17);
     steering_off.src = "/images/about/navabout_steering_off.gif";
     metadata_off = new Image(13,17);
     metadata_off.src = "/images/about/navabout_metadata_off.gif";
     canri_prog_off = new Image(13,17);
     canri_prog_off.src = "/images/about/navabout_canriprogram_off.gif"; 
     canri_comm_off = new Image(13,17);
     canri_comm_off.src = "/images/about/navabout_canricomm_off.gif";
}


function show(imagename) { 
    if (document.images) { 
        document[imagename].src = eval(imagename + "_on.src"); 
//      document["display"].src = eval(imagename + "_show.src"); 
    } 
}
 
function hide(imagename) { 
    if (document.images) { 
        document[imagename].src = eval(imagename + "_off.src"); 
//      document["display"].src = "/images/main/white_space.gif";
 
    } 
}