gistfile1.js

//Custom javascript must be self-executing.
// Valid Example:
document.body.getElementById("feature_box").innerHTML = "Treatment Text";
document.body.getElementById("feature_sub_box").innerHTML = "Split Test";

//Valid Example:
function change(str) {
     document.body.getElementById("feature_box").innerHTML = str;
}
change("Treatment Text");

//Invalid Example:
//Lacks call to change()
function change(str) {
     document.body.getElementById("feature_box").innerHTML = str;
}