var isnn,isie
if(navigator.appName=='Microsoft Internet Explorer') //check the browser
{  isie=true }

if(navigator.appName=='Netscape')
{  isnn=true }

function right(e) //to trap right click button 
{
	if (isnn && (e.which == 3 || e.which == 2 ))
		return false;
	else if (isie && (event.button == 2 || event.button == 3)) 
	{
		alert("Sorry, you do not have permission to right click on this page.");
		return false;
	}
		return true;
}

function key(k)   
{
	if(isie) {
		if(event.keyCode==17 || event.keyCode==18 || event.keyCode==93) {
			alert("Sorry, you do not have permission to press this key.") 
			return false;
		 } 
	}

	if(isnn){
		alert("Sorry, you do not have permission to press this key.") 
		return false; }   
}

function hidestatus(){
window.status='';
return true;
}

if (document.layers) document.captureEvents(Event.MOUSEOVER | Event.MOUSEOUT);
if (document.layers) window.captureEvents(Event.KEYPRESS);  
if (document.layers) window.captureEvents(Event.MOUSEDOWN);
if (document.layers) window.captureEvents(Event.MOUSEUP);
document.onmouseover=hidestatus;
document.onmouseout=hidestatus;
document.onkeydown=key;  
document.onmousedown=right;
document.onmouseup=right;
window.document.layers=right;

//function hidestatus(){
//window.status=''
//return true
//}

//if (document.layers)
//document.captureEvents(Event.MOUSEOVER | Event.MOUSEOUT)

//document.onmouseover=hidestatus
//document.onmouseout=hidestatus