function EnterPressed(e) {
// Code adapted from Jennifer Madden
// http://jennifermadden.com/162/examples/stringEnterKeyDetector.html

  var characterCode
  if(e && e.which){           // NN4 specific code
    e = e
    characterCode = e.which
  }
  else {
    e = event
    characterCode = e.keyCode // IE specific code
  }
  if (characterCode == 13) return true   // Enter key is 13
  else return false
}