How to make animated drop down menu responsive?

Hi

I've made an animated drop down menu in Edge Animate. It works fine at 945px wide with drop downs coming from 4 of the links. When the window is resized to 700px I want to reduce the 8 top links down to 4 and have longer drop downs and the same again at 400px wide. How do I do this as Edge has no media queries. do I use symbols?

Thanks.