var cell, cellHtml;

function hide() {
  if (cell && cellHtml) {
    cell.innerHTML = cellHtml;
  }
}

function show(cmpId, content) {
  var f = document.getElementById('descrframe');
  if (cell && cellHtml)
    cell.innerHTML = cellHtml;
  else {
    if (f.addEventListener)
      f.addEventListener("load", change, false);
    else
      f.attachEvent("onload", change);
  }
  cell = document.getElementById(cmpId);
  cellHtml = cell.innerHTML;
  cell.innerHTML = "loading...";
  f.src='/campaign-detail.jsp?campaign_id=' + cmpId + '&content=' + content;
}

function change() {
  var f = document.getElementById('descrframe');
  if (f.contentDocument)
    cell.innerHTML  = f.contentDocument.body.innerHTML;
  else
    cell.innerHTML  = f.Document.body.innerHTML;
}