How to include .js file into validater-rules.xml

Question

iam doing project using struts.
i have .js file for client side validation.how to include .js file into struts validate-rules.xml so that i can use those validation in my project.
without writing any class.
is there any way

Answer 1

copy + paste from my book...............
Enabling Client-Side Validations
In addition to providing a framework for simplifying server-side form data validations, Validator provides an easy-to-use mechanism for performing client-side validations. Each validation routine defined in the validator-rules.xml file optionally specifies JavaScript code that can be run in the browser (client side) to perform the same validations that take place on the server side. When run on the client side, the validations will not allow the form to be submitted until they have all passed.
To enable client-side validation, you have to place the HTML Tag Library's javascript tag in each JSP for which you want validation performed, as shown here:
<html:javascript formName="logonForm"/>
The javascript tag requires that you use the formName attribute to specify the name of a <form> definition from the validation.xml file, as shown here, for which you want validations performed:
<form name="logonForm">
<field property="username" depends="required">
<arg0 key="prompt.username"/>
</field>
<field property="password" depends="required">
<arg0 key="prompt.password"/>
</field>
</form>
All the validations that you have specified for the <form> definition to run on the server side will be run on the client side.