这段代码哪里有问题?
window.onload = function(){
var Lis = document.getElementsByTagName("li");
if(var i=0 ; i<Lis.length ; i++){
Lis[i].i = i;
Lis[i].onmouseover = function(){
this.className = "lihover";
}
Lis[i].onmouseout = function(){
this.className = "";
}
}
}