JSFiddle - React, Tailwind, and code Playground
by mesak
HTML
<script src="http://code.jquery.com/ui/1.9.0/jquery-ui.js"></script>
<link rel="stylesheet" href="http://twitter.github.com/bootstrap/assets/css/bootstrap.css">
<link rel="stylesheet" href="http://twitter.github.com/bootstrap/assets/css/bootstrap-responsive.css">
<div id="a" class="alert">
test2
</div>
<div id="b" class="alert alert-info">
<div class="popover top">
<div class="arrow"></div>
<h3 class="popover-title">Popover top</h3>
<div class="popover-content">
<p>Sed posuere consectetur est at lobortis. Aenean eu leo quam. Pellentesque ornare sem lacinia quam venenatis vestibulum.</p>
</div>
</div>
</div>
CSS
#a{
width:300px;
height:400px
}
#b{
width:100px;
}
JavaScript
$('#a').mousemove(function(event){
$( "#b" ).position({
my: "left+3 bottom-3",
of: event,
collision: "fit"
});
})