JQ插件第五十一：老式漂浮广告图片

jQuery.piao = {
    "ads": new Object,
    "newFloatAd": function(options) {
        var defaultValue = { img: "", link: "", width: "190px", height: "48px" };
        var opts = $.extend(defaultValue, options || {});
        var ad = document.createElement("span");
        ad.id = "adId";
        ad.innerHTML += "<div  onclick='guanbu(this)'onmouseover='over()' onmouseout='out(this)'  style='position:absolute; right:3px; top:0px;cursor:pointer;'>×</div>";
        ad.DirV = true;
        ad.DirH = true;
        ad.AutoMove = true;
        ad.style.cursor = 'pointer';
        ad.Image = new Image;
        ad.Seed = Math.random();
        ad.Timer = setInterval("$.piao.float(" + ad.Seed + ")", 50);
        this.ads[ad.Seed] = ad;
        ad.Image.Parent = ad;
        ad.Image.onclick = function() { window.location.href = opts.link; }

        ad.style.position = "absolute";
        ad.style.left = 0;
        ad.style.top = 0;
        ad.Image.src = opts.img;
        ad.Image.onmouseover = function() { this.Parent.AutoMove = false; }
        ad.Image.onmouseout = function() { this.Parent.AutoMove = true; }
        ad.Image.style.width = opts.width;
        ad.Image.style.height = opts.height;
        ad.appendChild(ad.Image);
        document.body.appendChild(ad);
        return ad;
    },
    "float": function(floatId) {
        var ad = this.ads[floatId];
        if (ad.AutoMove) {
            var curLeft = parseInt(ad.style.left);
            var curTop = parseInt(ad.style.top);
            if (ad.offsetWidth + curLeft > document.body.clientWidth + document.body.scrollLeft - 1) {
                curLeft = document.body.scrollLeft + document.body.clientWidth - ad.offsetWidth;
                ad.DirH = false;
            }
            if (ad.offsetHeight + curTop > document.body.clientHeight + document.body.scrollTop - 1) {
                curTop = document.body.scrollTop + document.body.clientHeight - ad.offsetHeight;
                ad.DirV = false;
            }
            if (curLeft < document.body.scrollLeft) {
                curLeft = document.body.scrollLeft;
                ad.DirH = true;
            }
            if (curTop < document.body.scrollTop) {
                curTop = document.body.scrollTop;
                ad.DirV = true;
            }
            ad.style.left = curLeft + (ad.DirH ? 1 : -1) + "px";
            ad.style.top = curTop + (ad.DirV ? 1 : -1) + "px";
        }
    }
}
$.piao.newFloatAd({ img: "/Images/1.jpg", link: "http://www.baidu.com" });

老效果，七八年前首页流行的漂浮广告