hello my stuts client side validation is not working. pls help me out i have put jsp file's code and validation.xml file's code. pls help

--of jsp page--

> <html:form action="validationaction"
> onsubmit="return
> validatelogonForm(this);">
>             <html:javascript formName="logonForm"/>
>             Enter name:<html:text property="username"/>
>             Enter pass:<html:text property="password"/>
> 
>             <html:submit/>
>              </html:form>

--of validation.xml--

<formset>
> 
>      
>         <form name="logonForm">
>             <field
>                 property="username"
>                 depends="required">
>                     <arg key="logonForm.username"/>
>             </field>
>             <field
>                 property="password"
>                 depends="required">
>                     <arg key="logonForm.password"/>
>                     
>             </field>
>         </form>
> 
>     </formset>