This event calls user-defined handlers (if there are any) and passes the following parameter:

• itemId - id of the activated item;
• state - default (single) mode always true, multimode true if item was activated (opened) and false if item was deactivated (closed).

    dhxAccord.attachEvent("onActive", function(itemId, state){
        // code here
    });
    // or
    function doOnActive(itemId, state){
        // code here
    }
    dhxAccord.attachEvent("onActive", doOnActive);