function toggleVisibility(id, NNtype, IEtype, WC3type) {
    if (document.getElementById) {
        eval("document.getElementById(id).style.visibility = \"" + WC3type + "\"");
    } else {
        if (document.layers) {
            document.layers[id].visibility = NNtype;
        } else {
            if (document.all) {
                eval("document.all." + id + ".style.visibility = \"" + IEtype + "\"");
            }
        }
    }
}

function ChangeZ(id) {
obj = document.getElementById("existingLayerID");
if (typeof obj!="undefined")
{
 obj.style.zIndex=50;
}
}

function tOn(id) {
   toggleVisibility(id, "show", "visible", "visible") ;
   }
function tOff(id) {
   toggleVisibility(id, 'hidden', 'hidden', 'hidden') ;
   }

function hideAll() { tOff('l01'); tOff('l02'); tOff('l03'); tOff('l04'); tOff('l05'); tOff('l06'); tOff('l07'); tOff('l08'); tOff('l09'); tOff('l10'); tOff('l11'); tOff('l12'); tOff('w01'); tOff('w02'); tOff('w03'); tOff('w04'); tOff('w05'); tOff('w06'); tOff('w07'); tOff('w08'); tOff('w09'); tOff('w10'); tOff('w11'); tOff('w12'); }


function showAll() { tOn('l01'); tOn('l02'); tOn('l03'); tOn('l04'); tOn('l05'); tOn('l06'); tOn('l07'); tOn('l08'); tOn('l09'); tOn('l10'); tOn('l11'); tOn('l12'); tOn('w01'); tOn('w02'); tOn('w03'); tOn('w04'); tOn('w05'); tOn('w06'); tOn('w07'); tOn('w08'); tOn('w09'); tOn('w10'); tOn('w11'); tOn('w12'); }