Handle multiple script tags.

web/script_test.html

@@ -16,11 +16,17 @@ limitations under the License.
 -->
 
 <script type="text/forth">
-: square dup * ;
-4 square . cr
+." Starting Tests..." cr
 </script>
+<script type="text/forth" src="script_test.fs"></script>
 <script src="ueforth.js"></script>
 <script type="text/forth">
-colors
-bye
+." Checking for 123..." cr
+123 = assert
+." Checking for foobar..." cr
+2 foobar 16 = assert
+." Script Test Passes" cr
+2 fg ." SUCCESS" cr
+: halt begin 100000 ms again ;
+halt
 </script>