var message="Right click has been disabled."; 
// comment out the alert for the message to appear 
function clickIE() {
if (document.all) {
  file://alert <file://alert (message);
 return false;
  }
 }
function clickNS(e) {
 if (document.layers||(document.getElementById&&!document.all)) 
 {
  if (e.which==2||e.which==3)
  {
    file://alert <file://alert> (message);  
   return false;
  } 
 }
}
 
if (document.layers) 
{
 document.captureEvents(Event.MOUSEDOWN);document.onmousedown=clickNS;
}
else
{
 document.onmouseup=clickNS;document.oncontextmenu=clickIE;
}