function showHideSwitch (theid) {
if (document.getElementById) {
  var switch_id = document.getElementById(theid);
  var switch_id_btn = document.getElementById(theid + "Btn");
    if (switch_id.style.display != 'none') {
    switch_id_btn.src = 'misc/tridown.gif'
     switch_id.style.display = 'none';
    }else{
    switch_id_btn.src = 'misc/triup.gif'
     switch_id.style.display = 'block';
    }
  }
}