am = "Sorry, this function is disabled!";
IE4 = ((navigator.appName == "Microsoft Internet Explorer") && (parseInt(navigator.appVersion) >= 4 ))
NS4 = ((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) >= 4 ))
function nrc(e){
if (NS4){if (e.which >= 2){alert(am);return false;}} else if (event.button>=2){alert(am);}}
document.onmousedown=nrc;
if (document.layers) window.captureEvents(Event.MOUSEDOWN);
window.onmousedown=nrc;