var isNS = (navigator.appName == "Netscape") ? 1 : 0;
	if(navigator.appName == "Netscape") document.captureEvents(Event.MOUSEDOWN||Event.MOUSEUP);
	function mischandler(){
	return false;
	}
function mousehandler(e){
	var myevent = (isNS) ? e : event;
	var eventbutton = (isNS) ? myevent.which : myevent.button;
	if((eventbutton==2)||(eventbutton==3)) return false;
	}
	
document.oncontextmenu	= mischandler;
document.onmousedown	= mousehandler;
document.onmouseup 		= mousehandler;