三俗网站必备之动态广告

就是一个小方框在整个页面内乱晃内容很黄很暴力的那种
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<style>
    .one{
        width:200px;
        height:220px;
        background-color:#CC3;
        position:absolute;
        top:0px;
        left:0px;   
        cursor:pointer;
    }
</style>
<script>
    window.onload = function(){
        var div1= document.getElementsByTagName("div")[0];
        var sx=5,sy=5,x,y;
        var timer = setInterval(startMove,20);
        function startMove(){
            if(document.documentElement.clientWidth - x < div1.offsetWidth || x<0) {
                sx = -sx;
            }
            if(document.documentElement.clientHeight - y < div1.offsetHeight || y<0){
                sy = -sy;
            }
             
            x = div1.offsetLeft + sx;
            y = div1.offsetTop + sy;
            div1.style.left = x +"px";
            div1.style.top = y +"px";           
        }
        div1.onmouseover=function(){
             
            clearInterval(timer);
            }
            div1.onmouseout=function(){
                timer = setInterval(startMove,20);
                }
        div1.onclick=function(){
            document.body.removeChild(div1);
            div1=null;
            }
    }
</script>
</head>
  
<body>
<div class="one">专治不孕不育阳痿早泄</div>
</body>
</html>