GSS is not define here.

Carl Chouinard · Carl Chouinard · commit d02aae78d703 · 2015-03-11T09:15:54.000-04:00
And display is not supported anymore. This change broke the menu of the website.
diff --git a/js/script.js b/js/script.js
@@ -7,7 +7,7 @@
       console.time("display");
     }
   }
-  GSS.once("display", function() {
+  engine.once("solve", function() {
     if (typeof console !== "undefined" && console !== null) {
       if (typeof console.timeEnd === "function") {
         console.timeEnd("display");

Original file line number	Diff line number	Diff line change
`@@ -7,7 +7,7 @@`
`7`	`7`	`console.time("display");`
`8`	`8`	`}`
`9`	`9`	`}`
`10`		`- GSS.once("display", function() {`
	`10`	`+ engine.once("solve", function() {`
`11`	`11`	`if (typeof console !== "undefined" && console !== null) {`
`12`	`12`	`if (typeof console.timeEnd === "function") {`
`13`	`13`	`console.timeEnd("display");`