document.observe("dom:loaded", function() {
	initAdToggles();
});

function initAdToggles() {
	$$('.ad').each(function(element) {
		element.observe('click', toggleAd);
	});
}

function toggleAd(event) {
	var element = Event.element(event);
	var adBlock = element.previous('.googlead.togglead');
	if(adBlock != null) {
		adBlock.toggle();
		if(element.hasClassName('hide')) {
			element.removeClassName('hide');
			element.addClassName('show');
		}
		else {
			element.removeClassName('show');
			element.addClassName('hide');
		}
	}
}