var msg="";
function clickIE()
{
   if (document.all)
   {
      (msg);
      return false;
   }
}
function clickNS(e)
{
   if (document.layers || (document.getElementById && !document.all))
   {
      if (e.which == 2 || e.which == 3)
      {
         (msg);
         return false;
      }
   }
}

if (document.layers) 
{
   document.captureEvents(Event.MOUSEDOWN);
   document.onmousedown = clickNS;
}
else
{
   document.onmouseup = clickNS;
   document.oncontextmenu = clickIE;
}

document.oncontextmenu = new Function("return false")