$.extend({
    autoimagesize: function (item, bool) {
        if (item[0]) {
            item = item[0];
        }
        var imgwidth = item.width;
        var imgheight = item.height;
        if (!item[0]) {
            item = $(item);
        }
        var parent = item.parent();
        var boxh = parent.height();
        var boxw = parent.width();
        if (imgwidth > boxw) {
            imgheight = imgheight * (boxw / imgwidth);
            imgwidth = boxw;
        }
        if (imgheight > boxh) {
            imgwidth = imgwidth * (boxh / imgheight);
            imgheight = boxh;
        }
        if (typeof bool === 'undefined') {
            item.attr("style", "");
        }
        if (!parent.is(":hidden")) {
            item.css({'width': imgwidth + 'px', 'height': imgheight + 'px', 'left': (boxw - imgwidth) / 2 + "px", 'top': (boxh - imgheight) / 2 + "px"});
            $(window).resize(function () {
                $.autoimagesize(item);
            });
        } else {
            var seti = setinterval(function () {
                if (!parent.is(":hidden")) {
                    clearinterval(seti);
                    $.autoimagesize(item);
                }
                $(window).resize(function () {
                    clearinterval(seti);
                });
            }, 100);
        }
    },
    autoproductimgsize: function (item) {
        var imgwidth = item.width();
        var imgheight = item.height();
        var parent = item.parent();
        var boxh = parent.height();
        var boxw = parent.width();
        if ((imgwidth / imgheight) < (boxw / boxh)) {
            item.css({'height': (boxw / boxh) * ((imgheight * 1.00) / imgwidth) * boxh, 'max-height': (boxw / boxh) * ((imgheight * 1.00) / imgwidth) * boxh, 'top': -((boxw / boxh) * ((imgheight * 1.00) / imgwidth) - 1) / 2 * boxh})
        } else {
            item.css({'width': (boxh / boxw) * ((imgwidth * 1.00) / imgheight) * boxw, 'max-width': (boxh / boxw) * ((imgwidth * 1.00) / imgheight) * boxw, 'left': -((boxh / boxw) * ((imgwidth * 1.00) / imgheight) - 1) / 2 * boxw})
        }
    }
});