Image Sizes
Image formats can be gif, jpg or png.
Login Page - Classic Theme
Marquee: 640 x 290px
Login Page - Wide and Grid Themes
Marquee: 1400 x 500px
Login Page - Full Theme
Marquee: 1400 x 875px
EE Home Page 7.0 Client Logo, Slideshow
Client logo: 280 x 75px
Slideshow on homepage: 620 x 290px
Library feature thumbnail: max width 90x (height can vary)
Vendor Logos
Logo: max width 170px, max height 60px
