getElementsByClassName function getElementsByClassName(className, node) { var results = []; walkTheDOM(node || document.body, function (node) { var a, c = node.className, i; if (c) { a = c.split( ); for (i = 0; i < a.length; i += 1) { if (a[i] === className) { results.push(node); break; } }); return results; }