How to make a group bar graph with error bars and split y axis

I would like to draw a group bar graph with error bars and split y axis to show both smaller and larger values in same plot. Although plotrix has function to do that but I don't know how to moifiy their aweful looking graphs. I got a good solution HERE. I just modified it as per my taste and requirement. It need gplots, extrafont and RColorBrewer and produce a high resolution beautiful chart.
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