var message = 'Function Disabled!'
function clickIE()
{
  if (document.all) {
    alert(message)
    return false
  }
}

function clickNS(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 = clickNS
} else {
  document.onmouseup = clickNS
  document.oncontextmenu=clickIE
}
document.oncontextmenu = new Function('return false')