function changeIt(the_div,the_change)
{
  var the_style = getStyleObject(the_div);
  if (the_style != false)
  {
    the_style.display = the_change;
  }
}

function hideIt()
{
  changeIt("ttkw","none");
  changeIt("phJosh","none");
  changeIt("phAnton","none");
  changeIt("phGraeme","none");
  changeIt("phCallum","none");
}

function getStyleObject(objectId) {
  if (document.getElementById && document.getElementById(objectId)) {
    return document.getElementById(objectId).style;
  } else if (document.all && document.all(objectId)) {
    return document.all(objectId).style;
  } else {
    return false;
  }
}