Client side validator is realy unsafe:(

I just saw my source code in my site.
<script type="text/javascript">
//<![CDATA[
regexpImie.evaluationfunction = "RegularExpressionValidatorEvaluateIsValid";
regexpImie.validationexpression = "^(?:[a-zA-ZacelnószzACELNÓSZZ]{3,40})$";
var reqNazwWlasc = document.all ? document.all["reqNazwWlasc"] : document.getElementById("reqNazwWlasc");
reqNazwWlasc.controltovalidate = "NazwiskoWlasc";
reqNazwWlasc.errormessage = "Validation message.";
It show which object is validated(his id ,name etc) and expression which using(Terrible!!)

So, it possible to change,encrypt,hide it in my source code when is shown or only way is to disable client side script in all my validators???
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