Random image background

HTML

some content here

JavaScript

$(document).ready(function() {
    	setInterval( function() {
      var image_array = new Array();
    image_array[0] = "http://picjumbo.picjumbocom.netdna-cdn.com/wp-content/uploads/Smooth-Touch-Workspace-1300x866.jpg";
    image_array[1] = "http://picjumbo.picjumbocom.netdna-cdn.com/wp-content/uploads/IMG_6850-1300x866.jpg";
    image_array[2] = "http://picjumbo.picjumbocom.netdna-cdn.com/wp-content/uploads/IMG_4340-1300x866.jpg";

 
    var rand_path = image_array[Math.floor(Math.random() * image_array.length)];
    
        $('body').css('background-image', 'url('+rand_path+')');
        }, 1000);
    });