function findParentNode(childObj, parentSelector) {
                var testObj = childObj.parentNode;

                function testParentNode(obj) {
                    var result = false;
                    forEachNode(obj.parentNode.querySelectorAll(parentSelector), function(node) {
                        if (node === obj) {
                            result = true;
                            return forEachNode.breakResult;
                        }

                        return undefined;
                    });
                    return result;
                }

                while(testParentNode(testObj)) {
                    testObj = testObj.parentNode;
                }
                return testObj;
            }

            function forEachNode(nodes, fn) {
                for (var n, i = 0; i < nodes.length; i += 1) {
                    n = nodes.item(i);
                    if (fn.call(n, n) === forEachNode.breakResult) {
                        break;
                    }
                }
            }

            forEachNode.breakResult = { break: 1 };