Hi Mohammad,
Sorry, I did see you question and looked at the now rather old showroom. I updated it in january of this year and changed a bit. I updated it again when I saw your question and tried so see if i could do something. I do not know how to make it support the shortcut you mentioned. I do see the slides in the order shown in the list field, dragging and dropping on the list changes the order. So I really do not understand, sorry.
Also I think there are some much better examples around now.
Let's hope you or someone else have some good ideas.
Birthe