Create a sitemap in Typo3 with images

I needed a sitemap with images. I looked for a solution and I found a nice tutorial. With some minor changes I managed to create the desired sitemap. The images are uploaded in the media section of each page.
So:

1. Edit the TScongfig of the RootPage adding the following lines (this will add a new menu type in the sitemap content element):
TCEFORM.tt_content.menu_type {
addItems {
99 = Page with abstract and image
}
}

2. Add the following lines at the bottom of the TypoScript Template
tt_content.menu.20 = CASE
tt_content.menu.20.key.field = menu_type
tt_content.menu.20.99 < temp.PageWithImage

3. Finally, create a HMENU as follows