var bEnableRightClick=true;
var message="Menu Not Available.";

function click(e) {

	if(bEnableRightClick==false){
		//if (document.all) {

		    if (event.button == 2) {
		        alert(message);
		        return false;
		    }
		//}

		//if (document.layers) {

		//    if (e.which == 3) {
		//        alert(message);
		//        return false;
		//    }
		//}
	}
}

if (document.layers) {
	document.captureEvents(Event.MOUSEDOWN);
}
document.onmousedown=click;