Dynamically arranging divs using jQuery

Answer 1

Here's a jQuery-less solution:

function appendNodesById(parent, ids) {
    for(var i = 0, len = ids.length; i < len; ++i)
        parent.appendChild(document.getElementById(ids[i]));
}

appendNodesById(document.getElementById('container'),
    ['someid4', 'someid2', 'someid3', 'someid1']);