function toggle() { 
  
  var td = document.getElementsByTagName('td');
  var th = document.getElementsByTagName('th');
  var b = getElementsByClassName('toggleButton','img');

  for(i = 0; i < b.length; i++) {
    if (b[i].src.match('control_panel_btn_show.gif')) {
      b[i].src = '/images/control_panel_btn_hide.gif';
    } else {
      b[i].src = '/images/control_panel_btn_show.gif';
    }
  }
  for (i = 0; i < td.length; i++) {
    if (td[i].className == 'hidden') {
      td[i].className = 'visible';
    } else if (td[i].className == 'visible') {
      td[i].className = 'hidden';
    }
  }
  for (i = 0; i < th.length; i++) {
    if (th[i].className == 'hidden') {
      th[i].className = 'visible';
    } else if (th[i].className == 'visible') {
      th[i].className = 'hidden';
    }
  }
}
function getElementsByClassName(clsName,htmltag){ 
  var arr = new Array(); 
  var elems = document.getElementsByTagName(htmltag);
  for ( var cls, i = 0; ( elem = elems[i] ); i++ ){
    if ( elem.className == clsName ){
      arr[arr.length] = elem;
    }
  }
  return arr;
}

function toggle_new() {
  var lots = document.getElementById('lots');
  var lots_expanded = document.getElementById('lots_expanded');
  var toggle_switch = document.getElementById('toggle_switch');
  var toggle_switch_bottom = document.getElementById('toggle_switch_bottom');

  if (lots.style.display == 'none') {
    lots.style.display = 'block';
    lots_expanded.style.display = 'none';
    toggle_switch.src = '/images/pct_btn_expand_open.gif';
    toggle_switch_bottom.src = '/images/pct_btn_expand_open.gif';
  } else {
    lots.style.display = 'none';
    lots_expanded.style.display = 'block';
    toggle_switch.src = '/images/pct_btn_expand_close.gif';
    toggle_switch_bottom.src = '/images/pct_btn_expand_close.gif';
  }
}