How do I invoke a Javascript that does not have a name using C#

I would like to invoke a Javascript function on a web page that does not have a f开发者_如何学JAVAunction name. Using C#, I would normally use Webbrowser.Document.InvokeScript("ScriptName"). In this instance however, there is only a type attribute. This is what it looks like:

<script type="text/javascript"> 
(function(){
    SOME CODE HERE;
})();
</script>

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That is a self-invoking function.
It will run as soon as that statement is executed.

It is not possible to run it again without modifying the script.

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As long as this closure does not export methods to the global namespace, you can't

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Expose a Method.

<script type="text/javascript"> 
(function(){
    MyFunction = function() {
      SOME CODE HERE;
    }
})();
</script>


Webbrowser.Document.InvokeScript("MyFunction");