function right(e) {
      
var msg = "Sorry, you don't have permission to right-click."; 
     
if (navigator.appName == 'Netscape' && e.which==3) {
	alert(msg);
	return false;
}
if (navigator.appName == 'Microsoft Internet Explorer' && event.button==2) {
	alert(msg);
	return false;
}
else return true;
}
      
function trap() 
{
if(document.images)
	{
	for(i=0;i<document.images.length;i++)
		{
		document.images[i].onmousedown = right;
		document.images[i].onmouseup = right;
		}
	}
}