am = "This function is disabled!";
function netscapeKeyPress(e) {
    if (e.modifiers == 2) {
    if (e.which == 3 ) {
    alert(am);
    return false;
    }
    }
}

function microsoftKeyPress() {
    if (window.event.ctrlKey) {
    if (window.event.keyCode == 3 ) {
    alert(am);
    return false;
    }
    }
}

if (navigator.appName == 'Netscape') {
    window.captureEvents(Event.KEYPRESS);
    window.onKeyPress = netscapeKeyPress;
}