https://qzfz.gov.cn/images/piaofu.js

1function addEvent(obj, evtType, func, cap) {
2        cap = cap || false;
3        if (obj.addEventListener) {
4            obj.addEventListener(evtType, func, cap);
5            return true;
6        } else if (obj.attachEvent) {
7            if (cap) {
8                obj.setCapture();
9                return true;
10            } else {
11                return obj.attachEvent("on" + evtType, func);
12            }
13        } else {
14            return false;
15        }
16    }
17    function getPageScroll() {
18        var xScroll, yScroll;
19        if (self.pageXOffset) {
20            xScroll = self.pageXOffset;
21        } else if (document.documentElement && document.documentElement.scrollLeft) {
22            xScroll = document.documentElement.scrollLeft;
23        } else if (document.body) {
24            xScroll = document.body.scrollLeft;
25        }
26        if (self.pageYOffset) {
27            yScroll = self.pageYOffset;
28        } else if (document.documentElement && document.documentElement.scrollTop) {
29            yScroll = document.documentElement.scrollTop;
30        } else if (document.body) {
31            yScroll = document.body.scrollTop;
32        }
33        arrayPageScroll = new Array(xScroll, yScroll);
34        return arrayPageScroll;
35    }
36    function GetPageSize() {
37        var xScroll, yScroll;
38        if (window.innerHeight && window.scrollMaxY) {
39            xScroll = document.body.scrollWidth;
40            yScroll = window.innerHeight + window.scrollMaxY;
41        } else if (document.body.scrollHeight > document.body.offsetHeight) {
42            xScroll = document.body.scrollWidth;
43            yScroll = document.body.scrollHeight;
44        } else {
45            xScroll = document.body.offsetWidth;
46            yScroll = document.body.offsetHeight;
47        }
48        var windowWidth, windowHeight;
49        if (self.innerHeight) {
50            windowWidth = self.innerWidth;
51            windowHeight = self.innerHeight;
52        } else if (document.documentElement && document.documentElement.clientHeight) {
53            windowWidth = document.documentElement.clientWidth;
54            windowHeight = document.documentElement.clientHeight;
55        } else if (document.body) {
56            windowWidth = document.body.clientWidth;
57            windowHeight = document.body.clientHeight;
58        }
59        if (yScroll < windowHeight) {
60            pageHeight = windowHeight;
61        } else {
62            pageHeight = yScroll;
63        }
64        if (xScroll < windowWidth) {
65            pageWidth = windowWidth;
66        } else {
67            pageWidth = xScroll;
68        }
69        arrayPageSize = new Array(pageWidth, pageHeight, windowWidth, windowHeight)
70        return arrayPageSize;
71    }
72    var AdMoveConfig = new Object();
73    AdMoveConfig.IsInitialized = false;
74    AdMoveConfig.ScrollX = 0;
75    AdMoveConfig.ScrollY = 0;
76    AdMoveConfig.MoveWidth = 0;
77    AdMoveConfig.MoveHeight = 0;
78    AdMoveConfig.Resize = function () {
79        var winsize = GetPageSize();
80        AdMoveConfig.MoveWidth = winsize[2];
81        AdMoveConfig.MoveHeight = winsize[3];
82        AdMoveConfig.Scroll();
83    }
84    AdMoveConfig.Scroll = function () {
85        var winscroll = getPageScroll();
86        AdMoveConfig.ScrollX = winscroll[0];
87        AdMoveConfig.ScrollY = winscroll[1];
88    }
89    addEvent(window, "resize", AdMoveConfig.Resize);
90    addEvent(window, "scroll", AdMoveConfig.Scroll);
91    function AdMove(id) {
92        if (!AdMoveConfig.IsInitialized) {
93            AdMoveConfig.Resize();
94            AdMoveConfig.IsInitialized = true;
95        }
96        var obj = document.getElementById(id);
97        obj.style.position = "absolute";
98        obj.style.visibility = "visible";
99        var W = AdMoveConfig.MoveWidth - obj.offsetWidth;
100        var H = AdMoveConfig.MoveHeight - obj.offsetHeight;
101        var x = W * Math.random(), y = H * Math.random();
102        var rad = (Math.random() + 1) * Math.PI / 6;
103        var kx = Math.sin(rad), ky = Math.cos(rad);
104        var dirx = (Math.random() < 0.5 ? 1 : -1), diry = (Math.random() < 0.5 ? 1 : -1);
105        var step = 1;
106        var interval;
107        this.SetLocation = function (vx, vy) { x = vx; y = vy; }
108        this.SetDirection = function (vx, vy) { dirx = vx; diry = vy; }
109        obj.CustomMethod = function () {
110            obj.style.left = (x + AdMoveConfig.ScrollX) + "px";
111            obj.style.top = (y + AdMoveConfig.ScrollY) + "px";
112            rad = (Math.random() + 1) * Math.PI / 6;
113            W = AdMoveConfig.MoveWidth - obj.offsetWidth;
114            H = AdMoveConfig.MoveHeight - obj.offsetHeight;
115            x = x + step * kx * dirx;
116            if (x < 0) { dirx = 1; x = 0; kx = Math.sin(rad); ky = Math.cos(rad); }
117            if (x > W) { dirx = -1; x = W; kx = Math.sin(rad); ky = Math.cos(rad); }
118            y = y + step * ky * diry;
119            if (y < 0) { diry = 1; y = 0; kx = Math.sin(rad); ky = Math.cos(rad); }
120            if (y > H) { diry = -1; y = H; kx = Math.sin(rad); ky = Math.cos(rad); }
121        }
122        this.Run = function () {

123            var delay = 20;
124            interval = setInterval(obj.CustomMethod, delay);
125            obj.onmouseover = function () { clearInterval(interval); }
126            obj.onmouseout = function () { interval = setInterval(obj.CustomMethod, delay); }
127        }
128    }