$(document).delegate(".problem_detail_wrap", "mouseover", function (e) {
var left = e.target.getBoundingClientRect().left;
var top = e.target.getBoundingClientRect().top + 20;
$($(this).children()[1]).css({ 'top': top, 'left': left })
});
$(document).delegate(".problem_detail_wrap", "mouseover", function (e) {
var left = e.target.getBoundingClientRect().left;
var top = e.target.getBoundingClientRect().top + 20;
$($(this).children()[1]).css({ 'top': top, 'left': left })
});