korkus2000 - 6:22 pm on Dec 10, 2002 (gmt 0)

if (navigator.appVersion.indexOf('Mac')!= -1){
alert("Wow, you use a Mac!");
}else{
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 + "\"");
}}}}}