var aLi=document.getElementsByClassName('li');
for(var i=0; i<aLi.length; i++){
aLi[i].onmouseover=function(){
var This=this.getElementsByTagName('ul')[0];
clearInterval(This.time)
This.time=setInterval(function(){
This.style.height=This.offsetHeight+8+"px";
if(This.offsetHeight>=120){
clearInterval(This.time);
}
},30)
//鼠标经过一级菜单,二级菜单动画下拉显示出来
}
//鼠标离开菜单,二级菜单动画收缩起来。
aLi[i].onmouseout=function(){
var This=this.getElementsByTagName('ul')[0];
claerInterval(This.time);
Thi.time=setInterval(function(){
This.style.height=This.offsetHeight-8+"px";
if(This.offsetHeight<=0){
clearInterval(This.time);
}
},30)
}
}
}
__innocence
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