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

function hideAll()
{
  changeDiv("Fr1","none");
  changeDiv("Fr2","none");
  changeDiv("Fr3","none");
  changeDiv("Fr4","none");
  changeDiv("hmL","none");
  changeDiv("hm9","none");
  changeDiv("links","none");
  changeDiv("cwbox","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;
  }
}