Saving Excel 2007 chart as web-page
 

Hello!
I have excel 2007 workbook with a chart. Chart contains two lines, every
line has shadow. Everything excel shown is ok, but after converting it to web
page, where are only one line, but where are two shadows.
I've put my .xlsx file to zip. You can find it he
http://komaristiy.narod.ru/DR.zip
Thanks a lot!
P.S. I have MS Excel 12.0.4518.1014 with russian UI