diff --git a/whalesong/repl-prototype/htdocs/repl.js b/whalesong/repl-prototype/htdocs/repl.js
index 771273b..1e0c287 100644
--- a/whalesong/repl-prototype/htdocs/repl.js
+++ b/whalesong/repl-prototype/htdocs/repl.js
@@ -1,23 +1,26 @@
-var COMPILED = [];
-
 $(document).ready(function() {
     "use strict";    
 
     var repl = $("#repl");
     var output = $("#output");
-    
-    plt.runtime.currentMachine.params.currentDisplayer = function(MACHINE, domNode) {
+
+    var M = plt.runtime.currentMachine;
+
+
+    // We configure output to send it to the "output" DOM node.
+    M.params.currentDisplayer = function(MACHINE, domNode) {
         $(domNode).appendTo(output);
     }
-    plt.runtime.currentMachine.params.currentErrorDisplayer = function(MACHINE, domNode) {
+    M.params.currentErrorDisplayer = function(MACHINE, domNode) {
         $(domNode).appendTo(output);
     }
 
 
+    // We then want to initialize the language module.
     var initializeLanguage = function(afterLanguageInitialization) {
         // Load up the language.
-        plt.runtime.currentMachine.modules['whalesong/lang/whalesong.rkt'].invoke(
-            plt.runtime.currentMachine,
+        M.modules['whalesong/lang/whalesong.rkt'].invoke(
+            M,
             function() {
                 console.log("Environment initialized.");
                 afterLanguageInitialization();
@@ -27,8 +30,6 @@ $(document).ready(function() {
                 alert("uh oh!");
             });
     };
-
-
     repl.attr('disabled', 'true');
     repl.val('Please wait, initializing...');
     initializeLanguage(
@@ -50,11 +51,46 @@ $(document).ready(function() {
         });
 
 
+
+    // CPS'ed for-each.
+    var forEachK = function(elts, f, after) {
+        var n = elts.length;
+        var loop = function(i) {
+            if (i >= n) {
+                return after();
+            } else {
+                return f(elts[i], function() { loop(i+1); });
+            }
+        }
+        loop(0);
+    };
+
+
+    // In evaluation, we'll send compilation requests to the server,
+    // and get back bytecode that we should evaluate.
     var evaluate = function(src, after) {
         console.log("about to eval", src);
         var onCompile = function(compiledResult) {
-            COMPILED.push(compiledResult);
-            after();
+            // compiledResult.compiledCodes is an array of function chunks.
+            var compiledCodes = compiledResult.compiledCodes;
+            forEachK(compiledCodes,
+                     function(code, k) {
+                         var codeFunction = eval(code);
+                         var onGoodEvaluation = function() {
+                             console.log('good evaluation');
+                             k();
+                         };
+                         var onBadEvaluation = function(M, err) {
+                             console.log('bad evaluation');
+                             console.log(err);
+                             if (err.stack) {
+                                 console.log(err.stack);
+                             }
+                             after();
+                         };
+                         codeFunction(M, onGoodEvaluation, onBadEvaluation);
+                     },
+                     after);
             //eval(compiledResult.compiled);
             // FIXME
             // plt.runtime.currentMachine.modules['whalesong/repl-prototype/anonymous-module.rkt'].invoke(
diff --git a/whalesong/repl-prototype/server.rkt b/whalesong/repl-prototype/server.rkt
index f47173d..58c615d 100644
--- a/whalesong/repl-prototype/server.rkt
+++ b/whalesong/repl-prototype/server.rkt
@@ -73,7 +73,7 @@
                     (define assembled (assemble/write-invoke compiled-bytecode #f assembled-op))
                     (cons (get-output-string assembled-op) (loop))])))
          (printf "assembled codes ~s\n" assembled-codes)
-         (write-json (hash 'compiled-codes assembled-codes)
+         (write-json (hash 'compiledCodes assembled-codes)
                      op)]
         [else
          (define program-port (open-output-string))
@@ -81,7 +81,7 @@
                                 (read (open-input-string (string-append "#lang whalesong\n" text-src)))))
                   #:should-follow-children? (lambda (src) #f)
                   #:output-port  program-port)
-         (write-json (hash 'compiled-module (get-output-string program-port))
+         (write-json (hash 'compiledModule (get-output-string program-port))
                      op)
          ])
   ;; Send it back as json text....