diff -r 7df624c2a0a1 -r e4fb6c7ac42a vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java
--- a/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java	Sun Jan 13 23:07:54 2013 +0100
+++ b/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java	Mon Jan 14 09:17:18 2013 +0100
@@ -673,8 +673,10 @@
                     break;
                 case opc_i2b:
                 case opc_i2c:
+                    out.append("{ /* number conversion */ }");
+                    break;
                 case opc_i2s:
-                    out.append("{ /* number conversion */ }");
+                    emit(out, "@1 = __toInt16(@1);", smapper.getI(0));
                     break;
                 case opc_aconst_null:
                     emit(out, "@1 = null;", smapper.pushA());