if (document.images) {
 
     strategy_on = new Image(13,17);
     strategy_on.src = "/images/policy/navpolicies_strategy_on.gif";
     metadata_on = new Image(13,17);
     metadata_on.src = "/images/policy/navpolicies_meta_on.gif";
     custodian_on = new Image(13,17);
     custodian_on.src = "/images/policy/navpolicies_custodian_on.gif";
     data_on = new Image(13,17);
     data_on.src = "/images/policy/navpolicies_data_on.gif";
     asdi_on = new Image(13,17);
     asdi_on.src = "/images/policy/navpolicies_asdi_on.gif";
       
     strategy_off = new Image(13,17);
     strategy_off.src = "/images/policy/navpolicies_strategy_off.gif";
     metadata_off = new Image(13,17);
     metadata_off.src = "/images/policy/navpolicies_meta_off.gif";
     custodian_off = new Image(13,17);
     custodian_off.src = "/images/policy/navpolicies_custodian_off.gif";
     data_off = new Image(13,17);
     data_off.src = "/images/policy/navpolicies_data_off.gif";
     asdi_off = new Image(13,17);
     asdi_off.src = "/images/policy/navpolicies_asdi_off.gif";
      
     strategy_show = new Image(293,17);
     strategy_show.src = "/images/policy/strategy_show.gif";
     custodian_show = new Image(293,17);
     custodian_show.src = "/images/policy/custodian_show.gif";
     metadata_show = new Image(293,17);
     metadata_show.src = "/images/policy/metadata_policy_show.gif";
     data_show = new Image(293,17);
     data_show.src = "/images/policy/data_show.gif";
     asdi_show = new Image(293,17);
     asdi_show.src = "/images/policy/asdi_show.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";
 
    } 
}