function moveFocus(elementId) {
  element = document.getElementById(elementId);
  if (element != null) {
    element.focus();
  }
  return false;
}

function setChecked(elementId) {
  element = document.getElementById(elementId);
  if (element != null) {
    element.checked = true;
  }
  return false;
}

function enterPressed(e) {  
  var keyCode = document.all ? window.event.keyCode : e.keyCode;
  if (keyCode == 13) {
    if (document.getElementById('sendForm')) {
      document.getElementById('sendForm').focus();
    }
  }
  return true;
}

function setDisabled(inputId, disabled) {
  object = document.getElementById(inputId);
  if (object != null) {
    object.disabled = disabled;
  }
}

document.onkeydown = enterPressed;