RSV Prototype Example

I'm trying to get Ben Keen's RSV for Prototype working. I found a suggestion for Ben Keen's component but, I'm having trouble getting it working with Prototype. Here is my code, it doesn't seem to be working. The error is RSV isn't a function. I'm not sure how to translate the jQuery example to Prototype.

function DomLoaded() {
    var mainForm = document.forms[0];

    try {
        mainForm.RSV({
            onCompleteHandler: OnComplete,
            rules: ["required,txtEmailAddress,Please Enter an email addresss"]
        });
    }
    catch (err) {
        alert(err);
    }

     alert("dom:loaded");
};

function OnComplete()
{
    alert("Complete.");

    //Stops Form from submitting
    return false;
}

From stackoverflow Sam

• I fixed this code myself. Here is the answer:

  function DomLoaded() {
      try {
      var myRSV = new RSV({
          formID:"aspnetForm",
          onCompleteHandler: OnComplete,
          rules: ["required,txtEmailAddress,Please Enter an email addresss"]
          });
      }
      catch (err) {
          alert(err);
      }
  
      alert("dom:loaded");
  };
  
  function OnComplete()
  {
      alert("Complete.");
  
      //Stops Form from submitting
      return false;
  }
  

  From Sam