jquery.popover

Introdução:

1 - Adicionar referência para jquery.popover.js:

<script type="text/javascript" src="jquery.popover.js"></script>

2 - Adicionar selector do elemento:

<a href="#" class="my-el-popover">Lorem ipsum</a>

3 - Inicializar o jquery.popover:

$('.my-el-popover').popover({
    popoverPosition: 'auto',
    startDelay: 200,
    endDelay: 200,
    fadeIn: 120,
    fadeOut: 120,
    onMouseEnter: function(el, ev) {
        //code
    },
    onMouseLeave: function(el, ev) {
        //code
    }
});