Isn't it possible to open those with paint? Because if they are, you can easily save them again as a .jpg or .png file and these do qualify for being shown! Have you tried doing this already? Don't know if this works, but it's worth a shot! =)
Actually, there is a guaranteed way to get .odt files, provided you have Paint or something like it. Make a screenshot of the page, open it with Paint or a similar program, crop the image if you want to, and save it as a .png or .jpg.
Yes, that was what I meant, thanx for elaborating Patrick. And if you want to save the file with it's true colors, I would suggest your prefer the .png version to save. This has the best results.