in website/content/js/head.js [515:525]
function each(arr, fn) {
if (!arr) { return; }
// arguments special type
if (typeof arr == 'object') { arr = [].slice.call(arr); }
// do the job
for (var i = 0; i < arr.length; i++) {
fn.call(arr, arr[i], i);
}
}