function sidePanelHide(showHide){
  if (showHide == 'hide') {
    document.getElementById('leftPanel').style.display = "none";
    document.getElementById('panelHideControls').innerHTML = '<a href="javascript:sidePanelHide(\'show\')">Show side panel</a>';
  } else {
    document.getElementById('leftPanel').style.display = "inline";
    document.getElementById('leftPanel').style.verticalAlign = "texttop";
    document.getElementById('panelHideControls').innerHTML = '<a href="javascript:sidePanelHide(\'hide\')">Hide side panel</a>';
  }
}