Efeito pulsar
HTML
<script src="http://code.jquery.com/ui/1.10.3/jquery-ui.js"></script>
<div class="meuDiv">texto</div>
CSS
.meuDiv
{
width: 200px;
height: 200px;
background-color: #000000;
color: #ffffff;
}
JavaScript
$(document).ready(function(){
pulsaObjecto();
})
function pulsaObjecto()
{
var timeEffect = 1000;
$('.meuDiv').fadeOut(timeEffect).fadeIn(timeEffect, pulsaObjecto);
}