var message="Unauthorised reproduction of copywritten content is prohibited!";

if (navigator.appName == 'Microsoft Internet Explorer')
{
  function NOclickIE(e) 
  {
    if (event.button == 2 || event.button == 3) 
	{
		alert(message);
        return false;
    }
    return true;
  }
  document.onmousedown=NOclickIE;
  document.onmouseup=NOclickIE;
  window.onmousedown=NOclickIE;
  window.onmouseup=NOclickIE;

} else {
	
  function NOclickNN(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=NOclickNN; 
  }
  document.oncontextmenu=new Function("alert(message);return false")
}