var msg_box ="No permission to right click!!";
function dis_rightclickIE(){
	if (navigator.appName == 'Microsoft Internet Explorer' && (event.button == 2 || event.button == 3))
	alert(msg_box)
}
function dis_rightclickNS(e){
	if ((document.layers||document.getElementById&&!document.all) && (e.which==2||e.which==3)){
		alert(msg_box)
		return false;
	}
}
if (document.layers){
	document.captureEvents(Event.MOUSEDOWN);
	document.onmousedown=dis_rightclickNS;
}else if (document.all&&!document.getElementById){
	document.onmousedown=dis_rightclickIE;
}
document.oncontextmenu=new Function("alert(msg_box);return false")