js/libs/ember-1.5.1.js
function(element, id) {
  if (element.getAttribute('id') === id) { return element; }

  var len = element.childNodes.length, idx, node, found;
  for (idx=0; idx<len; idx++) {
    node = element.childNodes[idx];
    found = node.nodeType === 1 && findChildById(node, id);
    if (found) { return found; }
  }
}
function(element, id) {
  if (element.getAttribute('id') === id) { return element; }

  var len = element.childNodes.length, idx, node, found;
  for (idx=0; idx<len; idx++) {
    node = element.childNodes[idx];
    found = node.nodeType === 1 && findChildById(node, id);
    if (found) { return found; }
  }
}
Use this to find children by ID instead of using jQuery