you can do (case sensitive):
$(".btn").click(function(){
var show=$(".staff-container .bold:contains('"+$(".search-query").val()+"')").parents(".staff-container");
show.css("display","block");
$(".staff-container").not(show).css("display","none");
});
http://jsfiddle.net/KqFMh/1/ you can add some class instead of .bold for the name and some id instead of .search-query