Replacing footer with an image for a htm, but it is not displayed

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Hi there!
Thanks you in advance for any suggestion/help.
1. My footer is an image: .gif
2. I want to add links to that image: Disclaimer, Site Map, Data policy, etc.
3. I have already created a new file with these links. This file is the same image than before, but with the links I mentioned above.
4. The file extension changes to htm.
5. I have uploaded the new htm file and placed in the folder where the image was: image/footer.gif
6. I have changed the file that the footer.php points at. E.g.: 'image/footer.gif' for 'image/footer.htm'under the directory:
domain/concrete/themes/theme_name/elements/footer.php/
7. The problem: the footer is not displayed (icon image broken) Why? I have also tried to place the file in a different folder, but not displayed either. What am I doing wrong?
Please help!!!