广告悬浮层

这样写不行吧```
var advTop
function move(){
    document.getElementByid("ad").style.pixelTop=advTop+document.body.scrollTop;
}
window.onscroll=move;
}

解决方案 »

  1.   

    getElementById要大写I上面写错了！
      

  2.   

    这个问题我来帮你解决：）
    今天才做的项目正好用到
    你COPY以下代码DW里测试
    五个位置随便你定哪个角哦：）<!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>
    <TITLE>随滚动条移动的层 - </TITLE>
    <META HTTP-EQUIV="Content-Type" CONTENT="text/html" charset="gb2312">
    <META NAME="Author" CONTENT="flasher">
    <META NAME="homepage" CONTENT="www.">
    </HEAD>
    <style>
    <!--
    .div{
     position: absolute;
     border: 2px solid red;
     background-color: #EFEFEF;
     line-height:90px;
     font-size:12px;
     z-index:1000;
    }
    -->
    </style>
    <BODY>
    <div id="Javascript.Div1" class="div" style="width: 240px; height:90px" align="center">正中...</div>
    <SCRIPT LANGUAGE="JavaScript">
    function sc1(){
     document.getElementById("Javascript.Div1").style.top=(document.documentElement.scrollTop+(document.documentElement.clientHeight-document.getElementById("Javascript.Div1").offsetHeight)/2)+"px";
     document.getElementById("Javascript.Div1").style.left=(document.documentElement.scrollLeft+(document.documentElement.clientWidth-document.getElementById("Javascript.Div1").offsetWidth)/2)+"px";
    }
    </SCRIPT>
    <div id="Javascript.Div2" class="div" style="width: 240px; height:90px" align="center">左上...</div>
    <SCRIPT LANGUAGE="JavaScript">
    function sc2(){
     document.getElementById("Javascript.Div2").style.top=(document.documentElement.scrollTop)+"px";
     document.getElementById("Javascript.Div2").style.left=(document.documentElement.scrollLeft)+"px";
    }
    </SCRIPT><div id="Javascript.Div3" class="div" style="width: 240px; height:90px" align="center">左下...</div>
    <SCRIPT LANGUAGE="JavaScript">
    function sc3(){
     document.getElementById("Javascript.Div3").style.top=(document.documentElement.scrollTop+document.documentElement.clientHeight-document.getElementById("Javascript.Div3").offsetHeight)+"px";
     document.getElementById("Javascript.Div3").style.left=(document.documentElement.scrollLeft)+"px";
    }
    </SCRIPT><div id="Javascript.Div4" class="div" style="width: 240px; height:90px" align="center">右上...</div>
    <SCRIPT LANGUAGE="JavaScript">
    function sc4(){
     document.getElementById("Javascript.Div4").style.top=(document.documentElement.scrollTop)+"px";
     document.getElementById("Javascript.Div4").style.left=(document.documentElement.scrollLeft+document.documentElement.clientWidth-document.getElementById("Javascript.Div4").offsetWidth)+"px";
    }
    </SCRIPT><div id="Javascript.Div5" class="div" style="width: 240px; height:90px" align="center">右下...</div>
    <SCRIPT LANGUAGE="JavaScript">
    function sc5(){
     document.getElementById("Javascript.Div5").style.top=(document.documentElement.scrollTop+document.documentElement.clientHeight-document.getElementById("Javascript.Div5").offsetHeight)+"px";
     document.getElementById("Javascript.Div5").style.left=(document.documentElement.scrollLeft+document.documentElement.clientWidth-document.getElementById("Javascript.Div5").offsetWidth)+"px";
    }
    </SCRIPT>
    <SCRIPT LANGUAGE="JavaScript">
    <!--
    function scall(){
     sc1();sc2();sc3();sc4();sc5();
    }
    window.onscroll=scall;
    window.onresize=scall;
    window.onload=scall;
    //-->
    </SCRIPT>
    <div style="position: absolute; top: 0px; left: 0px; width: 10000px; height: 4000px;"></div>
    </BODY>
    </HTML>
     
      

  3.   

    把这段去掉。。
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">