How to select second element with JQUERY when clicked on image ?

Answer 1

Since you have a break element following the image, you'll need to use nextAll and select the first DIV instead of simply using next with a filter as in my original answer.

$('.imgOpenClose').click( function() {
    $(this).nextAll('div:first').toggle();
});

Answer 2

If you have several images with the same class-tag, you can still do it without having to append a unique id:

$(function() {
    $('.imgOpenClose').click(function() {
        $(this).next('div').children('table').toggle();
    });
});