Wolfy, please use JPG compression, it´s there for a reason, don´t save them at 100%!

I´ve recompressed the pictures to 90% quality and the total size shrank from 22.2MB to 6.2MB. It would also be good to resize the pictures to 800x600, with 90% quality the size is only 4MB. Not everyone uses high-res desktops, I´ve set mine to 1152x864 and those pictures don´t fit into my browser window. If you don´t know how to resize pictures and change the quality setting download Irfanview, it´s free and it can do batch conversions. When you resize them activate "Use Resample function".