网站主当接到一个客户的广告，希望能像百度那样只引用一个JS就能实现右下角弹窗广告代码，现HTML580分享用纯JS实现右下角广告代码。

var html580ads={

init:function(title,content){

var text='

'+title+' X

'+

'

';

var thiz=this;

var rootElement = document.body;

thiz.oDiv = document.createElement("div");

thiz.oDiv.id="miaov_float_layer";

thiz.oDiv.style.cssText="border: 1px solid #aaaaaa; display:none;width:250px;";

rootElement.appendChild(thiz.oDiv);

thiz.oDiv.innerHTML=text;

var oBtnMin = document.getElementById('btn_min');

var oBtnClose = document.getElementById('btn_close');

thiz.oDivContent = thiz.oDiv.getElementsByTagName('div')[0];

var iMaxHeight = 0;

var isIE6 = window.navigator.userAgent.match(/MSIE 6/ig)

&& !window.navigator.userAgent.match(/MSIE 7|8/ig);

thiz.oDiv.style.display = 'block';

iMaxHeight = thiz.oDivContent.offsetHeight;

if (isIE6) {

thiz.oDiv.style.position = 'absolute';

thiz.repositionAbsolute();

window.attachEvent('onscroll', function(){

thiz.repositionAbsolute();

});

window.attachEvent('onresize', function(){

thiz.repositionAbsolute();

});

} else {

thiz.oDiv.style.position = 'fixed';

thiz.repositionFixed();

}

oBtnMin.timer = null;

oBtnMin.isMax = true;

oBtnMin.onclick = function() {

thiz.startMove(thiz.oDivContent, (this.isMax = !this.isMax) ? iMaxHeight : 0,

function() {

oBtnMin.className = oBtnMin.className == 'min' ? 'max'

: 'min';

});

};

},

startMove:function(obj, iTarget, fnCallBackEnd) {

if (obj.timer) {

clearInterval(obj.timer);

}

var thiz = this;

obj.timer = setInterval(function() {

thiz.doMove(obj, iTarget, fnCallBackEnd);

}, 30);

},

doMove:function(obj, iTarget, fnCallBackEnd) {

var iSpeed = (iTarget - obj.offsetHeight) / 8;

if (obj.offsetHeight == iTarget) {

clearInterval(obj.timer);

obj.timer = null;

if (fnCallBackEnd) {

fnCallBackEnd();

}

}

else {

iSpeed = iSpeed > 0 ? Math.ceil(iSpeed) : Math.floor(iSpeed);

obj.style.height = obj.offsetHeight + iSpeed + 'px';

(window.navigator.userAgent.match(/MSIE 6/ig) && window.navigator.userAgent

.match(/MSIE 6/ig).length == 2) ? this.repositionAbsolute()

: this.repositionFixed();

}

},

repositionFixed:function () {

this.oDiv.style.right = 0;

this.oDiv.style.bottom = 0;

},

repositionAbsolute:function () {

var left = document.body.scrollLeft || document.documentElement.scrollLeft;

var top = document.body.scrollTop || document.documentElement.scrollTop;

var width = document.documentElement.clientWidth;

var height = document.documentElement.clientHeight;

this.oDiv.style.left = left + width - this.oDiv.offsetWidth + 'px';

this.oDiv.style.top = top + height - this.oDiv.offsetHeight + 'px';

}

};

window.onload = function() {

html580ads.init('HTML580我帮你广告标题','HTML580用纯JS实现右下角广告代码内容');

}