Batch Convert Excel to HTML

I wonder if you have seen or used a software which can batch convert a list of excel files into the separate HTML files each corresponding to the individual sheets of the excel files? I have used the All Office Converter Platinum ( but it does not preserve the original formatting of the source excel files. It forces the black border on all the cells which are converted. I would like to see some software which can convert excel to HTML with full formatting preserved.
Hope to hear from you soon!)