function click(e) {
	try{
		if (document.all) {
			if (event.button==1||event.button==2||event.button==3) {
				oncontextmenu='return false';
		  	}
		}
		if (document.layers) {
		  	if (e.which == 3) {
		   		oncontextmenu='return false';
		  	}
		}
	}catch(e){}
}

if (document.layers) {
	document.captureEvents(Event.MOUSEDOWN);
}
document.onmousedown=click;
document.oncontextmenu = function(){
	return false;
}