var advInitTop=0; function move(){ var adv = document.getElementById("advLayer"); adv.style.position = "absolute"; adv.style.top = advInitTop + document.body.scrollTop; } window.onscroll=move ; //窗口的滚动事件,当页面滚动时调用move( )函数
var advInitTop=0; function move(){ var adv = document.getElementById("advLayer"); adv.style.position = "absolute"; adv.style.top = advInitTop + document.body.scrollTop; } window.onscroll=move ; //窗口的滚动事件,当页面滚动时调用move( )函数