partialSubmit with graphicImage not working?

I have a simp开发者_StackOverflow中文版le page, implementing a password input field with strength analysis. I'm usign Ice-faces 1.8.2.

I set the partialSubmit property of password input field to display password strength:

<ice:inputSecret redisplay="true" partialSubmit="true" 
    id="password" value="#{beanreg.password}"/>
<ice:panelGroup>
     <ice:graphicImage id="imgstrength" url="/images/#{beanreg.strengthImage}"/>
     <ice:outputText id="pwdstrength" 
      value="#{beanreg.passwordStrength}"/> 
</ice:panelGroup>
<ice:inputSecret partialSubmit="true" 
    id="password2" value="#{beanreg.password2}"/>

When I leave the password input field, the pwdstrength component correctly update his value, but the imgstrength field doesn't change the image. The image get changed only when subsequently I leave the field password2 or when I click anywhere in the form.

I tested the form both on Firefox3.6 and Chrome: same behaviour.

Any suggestion?

It's likely cached by the browser. Add a query string with a timestamp so that the browser is forced to request it fresh new from the server.

<ice:graphicImage id="imgstrength" url="/images/#{beanreg.strengthImage}?#{now.time}"/>

Where #{now} is a request scoped managed bean of class java.util.Date.

<managed-bean>
    <managed-bean-name>now</managed-bean-name>
    <managed-bean-class>java.util.Date</managed-bean-class>
    <managed-bean-scope>request</managed-bean-scope>
</managed-bean>