document.observe('dom:loaded', function () {

    /* Deklaration der Variablen */
    var elMainContainer = $$('.mainContainer').first();
    var arrToggelButton = $$('.toggle-button');
    var arrToggleTarget = $$('.toggle-target'); 
    
    arrToggelButton.each(function (elButton, intIdx) {
        elButton.observe('click', function () {
            arrToggleTarget[intIdx].toggle();
        });
    });
    
});