var dotPulse = {

	animate: function() {
		
	$('.dot').animate({ 
	opacity: 0.0 
	},{ 
	duration: 2000	
	}).animate({ 
	opacity: 1.0 
	},{ 
	duration: 2000	});
		
	setTimeout(dotPulse.animate(), 7000);
	}
}

$(document).ready(function(){
	dotPulse.animate()
});