// JavaScript Document
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; }   
}

if (document.layers)
{window.captureEvents(Event.KEYPRESS);  
if (document.layers) 
{window.captureEvents(Event.MOUSEDOWN); 
if (document.layers) 
{window.captureEvents(Event.MOUSEUP);  
document.onkeydown=key;  
document.onmousedown=right;
document.onmouseup=right;
window.document.layers=right;
}
}
}