(function($) {

    $.fn.tipsy = function(opts) {

        opts = $.extend({fade: false, gravity: 'n'}, opts || {});

        var tip = null, cancelHide = false;

        this.hover(function() {

            $.data(this, 'cancel.tipsy', true);

            var tip = $.data(this, 'active.tipsy');

            if (!tip) {

                tip = $('<div class="tipsy"><div class="tipsy-inner">' + $(this).attr('title') + '</div></div>');

                tip.css({position: 'absolute', zIndex: 100000});

                $(this).attr('title', '');

                $.data(this, 'active.tipsy', tip);

            }

            var pos = $.extend({}, $(this).offset(), {width: this.offsetWidth, height: this.offsetHeight});

            tip.remove().css({top: 0, left: 0, visibility: 'hidden', display: 'block'}).appendTo(document.body);

            var actualWidth = tip[0].offsetWidth, actualHeight = tip[0].offsetHeight;

            switch (opts.gravity.charAt(0)) {

                case 'n':

                    tip.css({top: pos.top + pos.height, left: pos.left + pos.width / 2 - actualWidth / 2}).addClass('tipsy-north');

                    break;

                case 's':

                    tip.css({top: pos.top - actualHeight, left: pos.left + pos.width / 2 - actualWidth / 2}).addClass('tipsy-south');

                    break;

                case 'e':

                    tip.css({top: pos.top + pos.height / 2 - actualHeight / 2, left: pos.left - actualWidth}).addClass('tipsy-east');

                    break;

                case 'w':

                    tip.css({top: pos.top + pos.height / 2 - actualHeight / 2, left: pos.left + pos.width}).addClass('tipsy-west');

                    break;

            }

            if (opts.fade) {

                tip.css({opacity: 0, display: 'block', visibility: 'visible'}).animate({opacity: 1});

            } else {

                tip.css({visibility: 'visible'});

            }

        }, function() {

            $.data(this, 'cancel.tipsy', false);

            var self = this;

            setTimeout(function() {

                if ($.data(this, 'cancel.tipsy')) return;

                var tip = $.data(self, 'active.tipsy');

                if (opts.fade) {

                    tip.stop().fadeOut(function() { $(this).remove(); });

                } else {

                    tip.remove();

                }

            }, 100);

        });

    };

})(jQuery);