function show_layer(lname) {
	if (lname == '') return;
//    var layer  = document.all ? document.all(lname).style : document.layers[lname];
//    var show  = document.all ? 'visible' : 'show';
//    layer.visibility = show;
    document.getElementById(lname).style.visibility = 'visible';
//alert(lname + ".visibility="+document.getElementById(lname).style.visibility );
//    document.cookie=lname+"="+layer.visibility;
}

function hide_layer(lname) {
    if (lname == '') return;
//    var layer  = document.all ? document.all(lname).style : document.layers[lname];
//    var hide  = document.all ? 'hidden' : 'hide';
//    layer.visibility = hide;
    document.getElementById(lname).style.visibility = 'hidden';
//    document.cookie=lname+"="+layer.visibility;
}

function flip_layer(lname) {
	if (lname == '') return;
	if (document.getElementById(lname).style.visibility == 'visible')
		document.getElementById(lname).style.visibility = 'hidden';
	else
		document.getElementById(lname).style.visibility = 'visible';
}