$(document).ready(function() {
    //hide the all of the element with class panelBody
    $(".panelBody").hide();
    $("#selectedBody").show();
   
    //toggle the componenet with class panelBody
    $(".panelHeader").click(function() {
        $('#selectedHeader').attr("id", "");
        $(this).find("table").attr("id", "selectedHeader");
        $(this).next(".panelBody").slideToggle(200).siblings(".panelBody").slideUp("fast");
    });
});