\[code\]html{ background: url(/assets/flower.jpg) no-repeat center center fixed; -webkit-background-size: cover; -moz-background-size: cover; -o-background-size: cover; background-size: cover;}\[/code\]How can I make this code randomly choose from a selected number of pictures as background. I am using Rails 3, so have that in mind, if that will simplify the process of making this work.THANKS! 