Random element generator

generator.js

var Generator = window.Generator || {};

Generator = (function() {
    'use strict';

    var container; // Container to append items to and get size constraints

    function init(id, total, className) {
        container = document.getElementById(id);

        // Generate some random divs
        for (var i = 0; i <= total; i++) {
            var el = document.createElement('div');
            el.className = className + ' item item-' + (i + 1);
            el.style.position = 'absolute';
            updatePosition(el);
            container.appendChild(el);
        }

    }

    function updatePosition(el) {
        var top = Math.round(Math.random() * container.offsetWidth),
            left = Math.round(Math.random() * container.offsetHeight);
        el.style.top = top + 'px';
        el.style.left = left + 'px';
    }

    return {
        init: init
    };
})();

$(function() {
    'use strict';
    Generator.init('scene', 10, 'bubble');
});