javascript - Alert Message on event -

i looking way change following javascript when user clicks on right button, shows custom message in alert box.

<script type="text/javascript"> function mousedwn(e) {  try { if (event.button == 2||event.button == 3) return false; }   catch (e) { if (e.which == 3) return false; }  }     document.oncontextmenu = function() { return false; }     document.ondragstart   = function() { return false; }     document.onmousedown   = mousedwn;     </script> 

try below code disabling right click alert/without alert.

<script language=javascript> <!--  //edit unwanted   var message="put messege here";  /////////////////////////////////// function clickie4(){ if (event.button==2){ alert(message); return false; } }  function clickns4(e){ if (document.layers||document.getelementbyid&&!document.all){ if (e.which==2||e.which==3){ alert(message); return false; } } }  if (document.layers){ document.captureevents(event.mousedown); document.onmousedown=clickns4; } else if (document.all&&!document.getelementbyid){ document.onmousedown=clickie4; }  document.oncontextmenu=new function("alert(message);return false")  // --> </script> 

thanks,

siva