message = "copyright @ 2007-2008 M. N.Dastur and Company (P) Ltd";

function NoRightClick(b) {
   if(((navigator.appName=="Microsoft Internet Explorer")&&(event.button > 1))
   ||((navigator.appName=="Netscape")&&(b.which > 1))){
   alert(message);
   return false;
   }
}
document.onmousedown = NoRightClick;

// -->