if (factory == null) {
throw new BridgeException
(ctx, animElt, "attribute.not.animatable",
new Object[] { target.getElement().getNodeName(), pn });
}
SVGStylableElement e = (SVGStylableElement) target.getElement();
CSSStyleDeclaration over = e.getOverrideStyle();
String oldValue = over.getPropertyValue(pn);
if (oldValue != null) {
over.removeProperty(pn);
}
Value v = cssEngine.getComputedStyle(e, null, idx);