http://jsfiddle.net/5UUM7/
With jquery:
$('#search').on('change', function(e){
var q = e.target.value;
$('div.staff-container').each(function(){
var name = this.children[0].children[1].children[0].textContent;
if(name.search(q) < 0) $(this).hide();
});
});
HTML:
Search:
...
...