(function ($) {

    var position = "";

    $.fn.divPosition = function (obj, div_position) {

        position = div_position;
        var element = this;

        $(window).bind("resize", function () {
            changeCss(obj, position);
        });

        changeCss(obj, position);

        function changeCss(obj, position) {

            if (position == 'center') {
                var elementHeight = $(element).height();
                var elementWidth = $(element).width();
                var obj_width = $(obj).width();
                var obj_height = $(obj).height();

                $(element).css({
                    position: 'absolute',
                    'left': obj_width / 2 - elementWidth / 2,
                    'top': obj_height / 2 - elementHeight / 2
                });
            }
            else
                if (position == 'topCenter') {
                    var elementHeight = $(element).height();
                    var elementWidth = $(element).width();
                    var obj_width = $(obj).width();
                    var obj_height = $(obj).height();

                    $(element).css({
                        position: 'absolute',
                        'left': obj_width / 2 - elementWidth / 2,
                        'top': 0
                    });
                }
                else
                    if (position == 'bottomCenter') {
                        var elementHeight = $(element).height();
                        var elementWidth = $(element).width();
                        var obj_width = $(obj).width();
                        var obj_height = $(obj).height();

                        $(element).css({
                            position: 'absolute',
                            'left': obj_width / 2 - elementWidth / 2,
                            'bottom': 0
                        });
                    }
        };

    };
})(jQuery);