hello. I have a question about vxml2.0 or 2.1

I want to know if I have two <block&gt; inside one <form&gt;,and i use the first <block&gt; to contain a <script&gt;, which contain a <CDATA&gt;, which contain a JavaScript function definition.&nbsp;
the other <block&gt; contain a <script&gt;, which contain a <CDATA&gt;, which contain some JavaScript to call function defined above.&nbsp;
I want to know if such usage is supported or forbidden inside vxml2.0 or 2.1.