http://www.boarddigger.com/skins/146465/js/zzsc.js

1
2(function($) {
3    $.fn.jqueryzoom = function(options) {
4        var settings = {
5            xzoom: 440,
6            yzoom: 440,
7            offset: 10,
8            position: "right",
9            lens: 1,
10            preload: 1
11        };
12        if (options) {
13            $.extend(settings, options);
14        }
15        var noalt = '';
16        $("#ceshi").css("width", "100%");
17        $("#ceshi").css("height", "100%");
18        $(this).hover(function() {
19
20            $(this).css("width", $(this).children('img').css("width"));
21            $(this).css("height", $(this).children('img').css("height"));
22            $(this).css("position", "absolute");
23
24            var imageLeft = $(this).offset().left;
25            var imageTop = $(this).offset().top;
26            var imageWidth = $(this).children('img').get(0).offsetWidth;
27            var imageHeight = $(this).children('img').get(0).offsetHeight;
28            noalt = $(this).children("img").attr("alt");
29            var bigimage = $(this).children("img").attr("jqimg");
30            $(this).children("img").attr("alt", '');
31            if ($("div.zoomdiv").get().length == 0) {
32                $(this).parent().after("<div class='zoomdiv'><img style='width:"+(imageWidth*2)+"px;height:"+(imageHeight*2)+"px;' class='bigimg' src='" + bigimage + "'/></div>");
33                $(this).append("<div class='jqZoomPup'>&nbsp;</div>");
34            }
35            if (settings.position == "right") {
36                if (imageLeft + imageWidth + settings.offset + settings.xzoom > screen.width) {
37                    leftpos = imageLeft - settings.offset - settings.xzoom;
38                } else {
39                    leftpos = imageLeft + imageWidth + settings.offset;
40                }
41            } else {
42                leftpos = imageLeft - settings.xzoom - settings.offset;
43                if (leftpos < 0) {
44                    leftpos = imageLeft + imageWidth + settings.offset;
45                }
46            }
47            $("div.zoomdiv").css({
48                
49            });
50            $("div.zoomdiv").width(settings.xzoom);
51            $("div.zoomdiv").height(settings.yzoom);
52            $("div.zoomdiv").show();
53            if (!settings.lens) {
54                $(this).css('cursor', 'crosshair');
55            }
56            $(document.body).mousemove(function(e) {
57                mouse = new MouseEvent(e);
58                var bigwidth = $(".bigimg").get(0).offsetWidth;
59                var bigheight = $(".bigimg").get(0).offsetHeight;
60                var scaley = 'x';
61                var scalex = 'y';
62                if (isNaN(scalex) | isNaN(scaley)) {
63                    var scalex = (bigwidth / imageWidth);
64                    var scaley = (bigheight / imageHeight);
65                    $("div.jqZoomPup").width((settings.xzoom) / (scalex * 1));
66                    $("div.jqZoomPup").height((settings.yzoom) / (scaley * 1));
67                    if (settings.lens) {
68                        $("div.jqZoomPup").css('visibility', 'visible');
69                    }
70                }
71                xpos = mouse.x - $("div.jqZoomPup").width() / 2 - imageLeft;
72                ypos = mouse.y - $("div.jqZoomPup").height() / 2 - imageTop;
73                if (settings.lens) {
74                    xpos = (mouse.x - $("div.jqZoomPup").width() / 2 < imageLeft) ? 0 : (mouse.x + $("div.jqZoomPup").width() / 2 > imageWidth + imageLeft) ? (imageWidth - $("div.jqZoomPup").width()-0) : xpos;
75                    ypos = (mouse.y - $("div.jqZoomPup").height() / 2 < imageTop) ? 0 : (mouse.y + $("div.jqZoomPup").height() / 2 > imageHeight + imageTop) ? (imageHeight - $("div.jqZoomPup").height()-0) : ypos;
76                }
77                if (settings.lens) {
78                    $("div.jqZoomPup").css({
79                        top: ypos,
80                        left: xpos
81                    });
82                }
83                scrolly = ypos;
84                $("div.zoomdiv").get(0).scrollTop = scrolly * scaley;
85                scrollx = xpos;
86                $("div.zoomdiv").get(0).scrollLeft = (scrollx) * scalex;
87            });
88        },
89        function() {
90            $(this).children("img").attr("alt", noalt);
91            $(document.body).unbind("mousemove");
92            if (settings.lens) {
93                $("div.jqZoomPup").remove();
94				
95            }
96            $("div.zoomdiv").remove();
97        });
98        count = 0;
99        if (settings.preload) {
100            $('body').append("<div style='display:none;' class='jqPreload" + count + "'></div>");
101            $(this).each(function() {
102                var imagetopreload = $(this).children("img").attr("jqimg");
103                var content = jQuery('div.jqPreload' + count + '').html();
104                jQuery('div.jqPreload' + count + '').html(content + '<img src=\"' + imagetopreload + '\">');
105            });
106        }
107    }
108})(jQuery);
109function MouseEvent(e) {
110    this.x = e.pageX;
111    this.y = e.pageY;
112}