On the first mentioned website the problem seems to be fixed, although I am not sure what I did. At another website (with a different theme, sorry) I used the same plugin (W3 cache) with the same outcome. I reproduced this problem now by activating the plugin again. Review http://www.dg-webshop.nl on an iPhone and desktop/laptop. As it is night I have few visitors, tomorrow I will set it back. Regards and hari yang menyenangkan.