/* Variables */
var pe = '';
var currentFeature = 0;
var features = $A(["ads","sites","leads"]);

/* Functions */

function gotoFeature(index) {
	$(features[currentFeature]).hide();		
	$(features[currentFeature] + '-image').hide();
	$(features[index]).show();
	Effect.Appear($(features[index] + '-image'));
	$('btn_' + features[currentFeature]).removeClassName('selected');
	$('btn_' + features[index]).addClassName('selected');
	currentFeature = index;	
}

/* On Page Load */
Event.observe(window, 'load', function() {
	pe = new PeriodicalExecuter(function(pe) {
		gotoFeature((((currentFeature+1) < 3) ? currentFeature+1 : 0));
	}, 8);
});