Random background image with a fixed background image on a specific page

random-bg.js

$=jQuery.noConflict();

(function () {
  	var backgrounds = [
      "http://d3zntdne6n1qh.cloudfront.net/microsoft-rolling-hills.jpg",
      "http://d3zntdne6n1qh.cloudfront.net/san-francisco-night.jpg",
      "http://d3zntdne6n1qh.cloudfront.net/snow-mountain.jpg",
      "http://d3zntdne6n1qh.cloudfront.net/turqoise-lake.jpg",
      "http://d3zntdne6n1qh.cloudfront.net/desert.jpg",
      "http://d3zntdne6n1qh.cloudfront.net/beach.jpg"
    ];
  
  	function getRandomInt(max) {
  		return Math.floor(Math.random() * max);
	}
  
    $( document ).ready(function() {
        var index = getRandomInt(backgrounds.length);
      	if ($("body.page-id-1949").length === 1) {
          $("body").css('background-image', 'url(http://d3zntdne6n1qh.cloudfront.net/emirates-airlines.jpg)');
        } else {
          $("body").css('background-image', 'url(' + backgrounds[index] + ')');
        }
    });
}());