客服果果=function (id,_top,_left){ var me=id.charAt?document.getElementById(id):id, d1=document.body, d2=document.documentElement; d1.style.height=d2.style.height='100%';me.style.top=_top?_top+'px':0;me.style.left=_left+"px";//[(_left>0?'left':'left')]=_left?Math.abs(_left)+'px':0; me.style.position='absolute'; setInterval(function (){me.style.top=parseInt(me.style.top)+(Math.max(d1.scrollTop,d2.scrollTop)+_top-parseInt(me.style.top))*0.1+'px';},10+parseInt(Math.random()*20)); return arguments.callee; }; window.onload=function (){ 客服果果 ('xixi',100,-152) }