define([],function()
{

    $.backgroundImage = function(element, options) {

        // Default options
        var defaults = {};

        // Reference to this
        var t = this;

        var $parent = $(element);

        var $image = $parent.children('img');

        var imageLoaded = false;

        t.boot = function ()
        {
            // Extend the defaults with options, save in settings
            t.settings = $.extend({}, defaults, options);

            // Reset parent height
            var $header = $('#header');
            $parent.css({ top: $header.height() ,height: ($(window).height() - $header.height())+'px' });

            // Wait until image is loaded
            $($image).one('load', function() {

                imageLoaded = true;
                t.adjust();

            }).each(function() {
                if(this.complete) $(this).load();
            });
        };

        t.adjust = function()
        {
            // Get parent width and height
            var parentSize = {
                width: $parent.width(),
                height: $parent.height()
            };
            if(imageLoaded) {
                // Images adjust in full-width or full-height,
                // depending on ratio and parent dimensions
                var ratioI = $image.width() / $image.height();
                var ratioP = parentSize.width / parentSize.height;

                if (ratioP >= ratioI) {
                    // Make image as wide as parent
                    $image.width(parentSize.width);
                    $image.height(parentSize.width / ratioI);
                }
                else {
                    // Make image as high as parent
                    $image.height(parentSize.height);
                    $image.width(parentSize.height * ratioI);
                }

                var ml = $image.width() / -2;
                //var mt = $img.height() / -2;
                $image.css({display: 'block', marginLeft: ml + 'px'});

                // Show slider
                if (!$parent.hasClass('show')) {
                    $parent.addClass('show');
                }

            }

        };

        // Run plugin
        t.boot();
    };

    $.fn.backgroundImage = function(options)
    {
        return this.each(function()
        {
            // if plugin has not already been attached to the element
            if ($(this).data('backgroundImage') == undefined)
            {
                // create a new instance of the plugin
                $(this).data('backgroundImage', new $.backgroundImage(this, options));
            }
        });
    }

});