nextSibling (smart use of dom methods)

gistfile1.js

function LoopChildren(elm) {
  var nodes = elm.childNodes;
  var length = nodes.length;
  for (var i = 0; i < length; i++) {
    var node = nodes[i];
    //...
  }
}

//better use...

function LoopChildren2(elm) {
  var nodes = elm.firstChild;
  while (node != null) {
    //...
    node = node.nextSibling;
  }
}