I want to **randomly animate the body's background-position in an interval**.
There are a few predefined background-position values (x, y) stored in an array.

Here's the script so far:

```
$(document).ready(function() {
    var xyz = new Array();
    xyz[1] = "backgroundPosition: '0% 0%'";
    xyz[2] = "backgroundPosition: '53% 34%'";
    var item = xyz[Math.floor(Math.random()*xyz.length)];

    var move = setInterval(function(){
        $('body').animate({item}, 2000);
    }, 7000);
});

```

Can someone tell me where the issue is? Any code optimizations?
Thanks alot!