var message1 = "Copyright NRCconsulting. @2005" ;
var ns4 = (document.layers)? true:false;                                           //NS 4
var ie4 = (document.all)? true:false;                                                   //IE 4
var dom = (document.getElementById)? true:false;                //DOM

if (dom)
        {
  if (document.addEventListener)
          document.addEventListener("mouseup",RightMouseDisable,false);
  else
          document.oncontextmenu = IsForbidden;
  }
else if (ie4)
        {
  document.onkeydown = CheckKey;
  document.onmousedown = RightMouseDisable;
  }
else if (ns4)
        {
  document.captureEvents(Event.MOUSEDOWN);
  document.onmousedown = RightMouseDisable;
  }

function CheckKey()
        {
  var MyKey = event.keyCode;
        if (MyKey==93)
          {
    var MyValue = IsForbidden;
    return false;
    }
        }

function RightMouseDisable(e)
        {
        var MyNumber=0;
        if (ie4)
                MyNumber = event.button;
  else
    MyNumber = e.which;
        if (MyNumber==2||MyNumber==3)
          {
                var MyValue = IsForbidden();
    return false;
          }
  else
          return true;
  }

function IsForbidden()
        {
  alert(message1);
  return false;
        }