Hi all
i'm currently designing a newsletter, and i want to "swap" only 2 or 3 images by their mobile version… i have try with content:url( but no luck it's OK on my iPhone, but not on Windows Phone).
I know i can also using background but i want that these images will be 100% width of the table and with constraint aspect ratio (so i think i cannot do this with background…).
I try also to set my "mobile images" to display:none and visibility:hidden and then in the head CSS change these values, it's OK on iPhone but not also on Android or Windows Phone does not interpret this code, the person will never see these images and they are important.

Is someone can help me?
Thank you by advance

PS: sorry for my english, which is not as good as i would like ;)