/* 
 * @Author: Adam M Rivera
 * @Description: Simple clean hovertip extension.
 *
 * Copyright (c) 2009 Adam M Rivera

 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use,
 * copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following
 * conditions:

 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 * 
 */

(function($){
    $.fn.extend({
        hovertip: function() {
            if($("#hovertip").length < 1) $('body').append('<div id="hovertip"></div>');
            var hovertip = $('#hovertip'),leftDelta = 0,topDelta = 0,windowWidth = 0,windowHeight = 0,scrollTop = 0;
            return this.each(function() {
                var obj = $(this);
                obj.hover(
                    function(e){
                        hovertip.html($(this).next().html());
                        windowWidth = $(window).width();
                        windowHeight = $(window).height();
                        scrollTop = $(window).scrollTop();
                        if(windowWidth - e.pageX < hovertip.width() * 2 + 30) leftDelta = hovertip.width() + 30;
                        if(((windowHeight + scrollTop) - e.pageY) < hovertip.height() * 2 + 30) topDelta = hovertip.height() + 30;
                        hovertip.css({'top': ((e.pageY+15) - topDelta)+'px', 'left': ((e.pageX+15) - leftDelta)+'px', 'display': 'block'});
                        $().mousemove(function(e){
                            hovertip.css({'top': ((e.pageY+15) - topDelta)+'px', 'left': ((e.pageX+15) - leftDelta)+'px'});
                        });
                    },
                    function(){
                        $().unbind('mousemove');
                        hovertip.empty().css('display','none');
                        leftDelta = 0; topDelta = 0;
                    }
                );
            });
        }
    });
})(jQuery);