//**************************************************************
// jQZoom allows you to realize a small magnifier window,close
// to the image or images on your web page easily.
//
// jqZoom version 1.2
// Author Doc. Ing. Renzi Marco(www.mind-projects.it)
// Released on Dec 05 2007
// i'm searching for a job,pick me up!!!
// mail: renzi.mrc@gmail.com
//**************************************************************

(function ($) {

    $.fn.jqueryzoom = function(options) {

        var settings = {
            xzoom: 200, 	//zoomed width default width
            yzoom: 200, 	//zoomed div default width
            offset: 10, 	//zoomed div default offset
            position: "right"  //zoomed div default position,offset position is to the right of the image
        };

        if (options) {
            $.extend(settings, options);
        }

        var noalt = '';

        $(this).hover(function() {

            var imageLeft = $(this).get(0).offsetLeft;
            var imageRight = $(this).get(0).offsetRight;
            var imageTop = $(this).get(0).offsetTop;
            var imageWidth = $(this).get(0).offsetWidth;
            var imageHeight = $(this).get(0).offsetHeight;

            var bigimage = $(this).attr("alt");
            noalt = $(this).attr("alt");
            $(this).attr("alt", '');


            if ($("div.zoomdiv").get().length == 0) {

                $(this).after("<div class='zoomdiv'><img class='bigimg' src='" + bigimage + "'/></div>");

            }

            if (settings.position == "right") {

                leftpos = imageLeft + imageWidth + settings.offset;

            } else {

                leftpos = imageLeft - settings.xzoom - settings.offset;

            }

            $("div.zoomdiv").css({ top: imageTop, left: leftpos });

            $("div.zoomdiv").width(settings.xzoom);

            $("div.zoomdiv").height(settings.yzoom);

            $("div.zoomdiv").show();


            $(document.body).mousemove(function(e) {

                var bigwidth = $(".bigimg").get(0).offsetWidth;

                var bigheight = $(".bigimg").get(0).offsetHeight;

                var scaley = 'x';

                var scalex = 'y';


                if (isNaN(scalex) | isNaN(scaley)) {

                    var scalex = Math.round(bigwidth / imageWidth);

                    var scaley = Math.round(bigheight / imageHeight);

                }

                mouse = new MouseEvent(e);



                scrolly = mouse.y - imageTop - ($("div.zoomdiv").height() * 1 / scaley) / 2;

                $("div.zoomdiv").get(0).scrollTop = scrolly * scaley;

                scrollx = mouse.x - imageLeft - ($("div.zoomdiv").width() * 1 / scalex) / 2;

                $("div.zoomdiv").get(0).scrollLeft = (scrollx) * scalex;


            });
        }, function() {
            $(this).attr("alt", noalt);
            $("div.zoomdiv").hide();
            $(document.body).unbind("mousemove");
            $(".lenszoom").remove();
          //  $("div.zoomdiv").remove();
        });

    };

})(jQuery);

function MouseEvent(e) {
    this.x = e.pageX;
    this.y = e.pageY;
}