function ToggleTable() {

var zippedUri = "/images/zipped_triangle.gif";
var unzippedUri = "/images/unzipped_triangle.gif";

function toggleRows(triggerLink, type) {
  dataTable = document.getElementById('summarytable');
  dataTabletRows = dataTable.getElementsByTagName('TR');
  for (i = 0; i 
< dataTabletRows.length; i++) {
    currentRow = dataTabletRows[i];
    if (currentRow.className.indexOf('entity ' + type) != -1) {
      toggle(currentRow);
    }
  }
  linkImages = triggerLink.getElementsByTagName('IMG');
  zipImg = linkImages[0];
  if (opening) {
    zipImg.src = unzippedUri;
  } else {
    zipImg.src = zippedUri;
  }
}

function toggle(item) {
  if (item.style.display == '') {
    item.style.display = 'none';
    opening = false;
  } else {
    item.style.display = '';
    opening = true;
  }
}

}