// Render internal EffectBlock widget, which would be used to show/hide
// content of a page. Make the page initially invisible by setting
// display:none style.
EffectBlockAttributes effectBlockAttributes = new EffectBlockAttributes();
effectBlockAttributes.copy(attributes);
effectBlockAttributes.setId(protocol.getMarinerPageContext().generateUniqueFCID());
effectBlockAttributes.getStyles().getPropertyValues()
.setComputedAndSpecifiedValue(StylePropertyDetails.DISPLAY, DisplayKeywords.NONE);