function cOn(td){
if(document.getElementById||(document.all && !(document.getElementById))){
td.style.backgroundColor="#FFCC66";
}
}

function cOut(td){
if(document.getElementById||(document.all && !(document.getElementById))){
td.style.backgroundColor="#FFE066";
}
}

function display(layer_name) {
    document.all[layer_name].style.display = "";
}
function hide(layer_name) {
    document.all[layer_name].style.display = "none";
}