All the DOM recursion you'll ever need

iterateWalk.js

var slice = Array.prototype.slice

function iterativelyWalk(nodes, cb) {
    nodes = slice.call(nodes)

    while(nodes.length) {
        var node = nodes.shift(),
            ret = cb(node)

        if (ret) {
            return ret
        }

        if (node.childNodes.length) {
            nodes = slice.call(node.childNodes).concat(nodes)
        }
    }
}

recursivelyWalk.js

function recursivelyWalk(nodes, cb) {
    for (var i = 0, len = nodes.length; i < len; i++) {
        var node = nodes[i],
            ret = cb(node)

        if (ret) {
            return ret
        }

        if (node.childNodes.length) {
            var ret = recursivelyWalk(node.childNodes, cb)
            if (ret) {
                return ret
            }
        }
    }
}