THtmlFixes.IE6TransparentPngSupport Property
By default, Internet explorer does not support transparent PNGs. Normally this is not an issue, since Excel does not use much transparency. But if you rely on transparent images and don't want to use gif images instead of png, you can set this property to true. It will add special code to the HTML file to support transparent images in IE6.
Syntax
Namespace: FlexCel.Core
public Boolean IE6TransparentPngSupport { get; set; }