Refresh button on exercises

Great exercises all round - they really help me out and give my learning some structure.  One enhancement requests:

When switching between pinyin, hanzi and traditional on the exercises, could you include an option to auto-refresh rather than have to click the refresh button each time?  sometimes, i give up on the hanzi and have to use the pinyin and i like to immediately switch back to hanzi after seeing the pinyin. 

Thanks.