jQuery accordion if else condition with nextUntil()

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jQuery

selection

You can view my complete code here fiddle

$(".jx_form_Annuairecommunal:has(.level0 .level3)").click(function () {
        $(this).nextUntil('.jx_form_Annuairecommunal:has(.level0 .level3)').find('.level0 .level4').slideToggle(300);
    	$(this).nextUntil('.jx_form_Annuairecommunal:has(.level0 .level4)').find('#left1, #left2, #left3, #right1, #right2,#right3').slideToggle(300);
        return false;
    });

My problem is that whenever I clicked on a .level0 .level3 or a .level0 .level4 or a .level0 .level5 header I am not able to show the name of only the people belonging to this level. If ever I have .level0 .level3 with .level0 .level4 below it the name of the person should stop as it reaches this .level0 .level4 or else it should stop whenever it reaches another .level0 .level3

Hope that someone can help me out with this one and thx in advance