function toggleFilters(link, prefix){
	var options = prefix+'FilterOptions';
//	var summary = prefix+'FilterSummary';
	if(Element.visible(options)){
		Effect.BlindUp(options);
//		Effect.Appear(summary, {duration: 1.0});
		$(link).removeClassName('collapse-link-light');
		$(link).addClassName('expand-link-light');
	} else {
		Effect.BlindDown(options);
//		Effect.Fade(summary, {duration: 1.0});
		$(link).removeClassName('expand-link-light');
		$(link).addClassName('collapse-link-light');
	}
}