Spyce 2.2 - Highligthing form field on error

Hi, first time testing spyce though I've followed it's development
since pre 2.0. Testing the example in
http://spyce.sourceforge.net/docs/doc-tag_handlers.html, it works as
expected except that it only print the validation error on top,
mentioning the form element that failed. What if I want to highlight
every elements that got error, let say set the field border to red ?
Does it easily doable in spyce ?

The code from example:-

[[!
def calculate(self, api, x):
    from spyceException import HandlerError
    try:
        x = float(x)
    except ValueError:
        raise HandlerError('Value', 'Please input a number')
    if x < 0:
        raise HandlerError('Value', 'Cannot take the square root of
negative numbers!')
    self.result = x ** 0.5
]]

<spy:parent title="Active Handler Validation" />
<f:form>
    <f:text name="x" default="-1" label="Value:" />
    <f:submit handler="self.calculate" value="Square root" />
</f:form>

<p>
Result: [[= hasattr(self, 'result') and self.result or '(no result yet)' ]]
</p>

thanks.

-- 
kamal, www.k4ml.com

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