background size cover polyfill for IE (6, 7, 8)

gistfile1.txt

!function ($) {

    "use strict"; // jshint ;_;

    var BGCover = function (element, options) {
        this.$element = $(element);
        this.options = options;

        this.init();
    }

    BGCover.prototype = {
        init: function () {
            if ("backgroundSize" in document.body.style) {
                return;
            }

            var that = this;

            var img = $('<img />').attr('src', this.options.imageUrl);
            img.css({                
                'min-height': '100%',
                'min-width': '960px',
                'width': '100%',
                'height': 'auto',
                'position': 'fixed',
                'top': 0,
                'left': 0,
                'z-index': '-1'
            });

            this.$element.prepend(img);
        }
    }

    $.fn.bgCover = function (option) {
        return this.each(function () {
            var $this = $(this),
            options = $.extend({}, $.fn.bgCover.defaults, typeof option == 'object' && option);
            $this.data('bgCover', (new BGCover(this, options)));
        });
    }

    $.fn.bgCover.defaults = {
        imageUrl: '/Templates/Netcat/Styles/images/bg-placeholder.jpg'    
    };

    $.fn.bgCover.Constructor = BGCover;
        
    $(function () {
        
        $(document.body).bgCover();

    });

} (window.jQuery);