You will need to place each of these codes into separate pictures. To do so, go to "Upload / Change Photos," and click edit caption for the first picture, and paste one of the codes in, etc...
Adding a background <body background="http://www.example.com/image.jpg"> Make your pictures table transparent <style>table, td{background:transparent}</style> Making your background stay in place <style>body{background-attachment:fixed;}</style>