// usage: onMouseOver="showHighlight(this) onMouseOut="clearHighlight(this)
function showHighlight(row) {
  var s = row.className.substring(0,1);
  switch(s) {
    case 'o':
      row.className = 'odd-selected';
      break;
    case 'e':
      row.className = 'even-selected';
      break;
  }
}

function clearHighlight(row) {
  var s = row.className.substring(0,1);
  switch(s) {
    case 'o':
      row.className = 'odd';
      break;
    case 'e':
      row.className = 'even';
      break;
  }
}