function LOF(layName){
if(document.layers) document.layers[layName].visibility='hide';
if(document.all) document.all(layName).style.visibility="hidden";
if(!document.all && document.getElementById) document.getElementById(layName).style.visibility="hidden";
}

function LON(layName){
if(document.layers) document.layers[layName].visibility='show';
if(document.all) document.all(layName).style.visibility="visible";
if(!document.all && document.getElementById) document.getElementById(layName).style.visibility="visible";
}

function ALLOF(){
LOF('sub01');
LOF('sub02');
LOF('sub03');
LOF('sub04');
LOF('sub05');
LOF('sub06');
LOF('sub07');
}