js 漂浮广告代码（支持一个页面多次使用，其中一个带关闭功能哦!^^）

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>

<title>无标题文档</title>
 <script type="text/javascript">
 
 <!--
function addEvent(obj,evtType,func,cap){
    cap=cap||false;
 if(obj.addEventListener){
     obj.addEventListener(evtType,func,cap);
  returntrue;
 }elseif(obj.attachEvent){
        if(cap){
         obj.setCapture();
         returntrue;
     }else{
      return obj.attachEvent("on"+ evtType,func);
  }
 }else{
  returnfalse;
    }
}
function getPageScroll(){
    var xScroll,yScroll;
 if (self.pageXOffset) {
  xScroll = self.pageXOffset;
 } elseif (document.documentElement  &&  document.documentElement.scrollLeft){
  xScroll = document.documentElement.scrollLeft;
 } elseif (document.body) {
  xScroll = document.body.scrollLeft;
 }
 if (self.pageYOffset) {
  yScroll = self.pageYOffset;
 } elseif (document.documentElement  &&  document.documentElement.scrollTop){
  yScroll = document.documentElement.scrollTop;
 } elseif (document.body) {
  yScroll = document.body.scrollTop;
 }
 arrayPageScroll =new Array(xScroll,yScroll);
 return arrayPageScroll;
}
function GetPageSize(){
    var xScroll, yScroll;
    if (window.innerHeight  &&  window.scrollMaxY) {
        xScroll = document.body.scrollWidth;
        yScroll = window.innerHeight + window.scrollMaxY;
    } elseif (document.body.scrollHeight > document.body.offsetHeight){
        xScroll = document.body.scrollWidth;
        yScroll = document.body.scrollHeight;
    } else {
        xScroll = document.body.offsetWidth;
        yScroll = document.body.offsetHeight;
    }
    var windowWidth, windowHeight;
    if (self.innerHeight) {
        windowWidth = self.innerWidth;
        windowHeight = self.innerHeight;
    } elseif (document.documentElement  &&  document.documentElement.clientHeight) {
        windowWidth = document.documentElement.clientWidth;
        windowHeight = document.documentElement.clientHeight;
    } elseif (document.body) {
        windowWidth = document.body.clientWidth;
        windowHeight = document.body.clientHeight;
    }
    if(yScroll < windowHeight){
        pageHeight = windowHeight;
    } else {
        pageHeight = yScroll;
    }
    if(xScroll < windowWidth){
        pageWidth = windowWidth;
    } else {
        pageWidth = xScroll;
    }
    arrayPageSize =new Array(pageWidth,pageHeight,windowWidth,windowHeight)
    return arrayPageSize;
}
/*
例子
<div id="Div2">
    ***** content ******
</div>
var ad=new AdMove("Div2");
ad.Run();
*/
////////////////////////////////////////////////////////
var AdMoveConfig=new Object();
AdMoveConfig.IsInitialized=false;
AdMoveConfig.ScrollX=0;
AdMoveConfig.ScrollY=0;
AdMoveConfig.MoveWidth=0;
AdMoveConfig.MoveHeight=0;
AdMoveConfig.Resize=function(){
    var winsize=GetPageSize();
    AdMoveConfig.MoveWidth=winsize[2];
    AdMoveConfig.MoveHeight=winsize[3];
    AdMoveConfig.Scroll();
}
AdMoveConfig.Scroll=function(){
    var winscroll=getPageScroll();
    AdMoveConfig.ScrollX=winscroll[0];
    AdMoveConfig.ScrollY=winscroll[1];
}
addEvent(window,"resize",AdMoveConfig.Resize);
addEvent(window,"scroll",AdMoveConfig.Scroll);
function AdMove(id){
    if(!AdMoveConfig.IsInitialized){
        AdMoveConfig.Resize();
        AdMoveConfig.IsInitialized=true;
    }
    var obj=document.getElementById(id);
    obj.style.position="absolute";
    var W=AdMoveConfig.MoveWidth-obj.offsetWidth;
    var H=AdMoveConfig.MoveHeight-obj.offsetHeight;
    var x = W*Math.random(),y = H*Math.random();
    var rad=(Math.random()+1)*Math.PI/6;
var kx=Math.sin(rad),ky=Math.cos(rad);
    var dirx = (Math.random()<0.5?1:-1), diry = (Math.random()<0.5?1:-1);
    var step =1;
    var interval;
    this.SetLocation=function(vx,vy){x=vx;y=vy;}
    this.SetDirection=function(vx,vy){dirx=vx;diry=vy;}
    obj.CustomMethod=function(){
        obj.style.left = (x + AdMoveConfig.ScrollX) +"px";
        obj.style.top = (y + AdMoveConfig.ScrollY) +"px";
        rad=(Math.random()+1)*Math.PI/6;
        W=AdMoveConfig.MoveWidth-obj.offsetWidth;
        H=AdMoveConfig.MoveHeight-obj.offsetHeight;
        x = x + step*kx*dirx;
        if (x <0){dirx =1;x =0;kx=Math.sin(rad);ky=Math.cos(rad);}
        if (x > W){dirx =-1;x = W;kx=Math.sin(rad);ky=Math.cos(rad);}
        y = y + step*ky*diry;
        if (y <0){diry =1;y =0;kx=Math.sin(rad);ky=Math.cos(rad);}
        if (y > H){diry =-1;y = H;kx=Math.sin(rad);ky=Math.cos(rad);}
    }
    this.Run=function(){
        var delay =10;
        interval=setInterval(obj.CustomMethod,delay);
        obj.onmouseover=function(){clearInterval(interval);}
        obj.onmouseout=function(){interval=setInterval(obj.CustomMethod, delay);}
    }
}

 //-->
</script>
 
 
</head>

<body>
    <div id="gg1" style="100px;height:100px;background-color:red;color:yellow">
     广告1js漂浮广告代码
     
    </div>
    <div id="gg2" style="100px;height:100px;background-color:blue;color:yellow">
     广告2js漂浮广告代码
    </div>
    <div id="gg3" style="100px;height:100px;background-color:green;color:yellow"  onmousemove="_stop()" onmouseout="_start()">
    <a href="#" onclick="this.parentNode.style.display='none';return false;" style="display:block; position:absolute; right:0px; top:0px;">关闭</a>

</div>
    </div>
    <script type="text/javascript">
    <!--
        var ad1=new AdMove("gg1");
        ad1.Run();
 var ad2=new AdMove("gg2");
        ad2.Run();
 var ad3=new AdMove("gg3");
        ad3.Run();
    //-->
    
    function start() {                    
gg3.style.visibility ="visible";                  
interval = setInterval('changePos()', delay);                    
}              
start();  
    
    
    </script>
</body>
</html>
经验可以积累，但梦想永远不能磨灭