fgm实例练习笔记-2.11鼠标移过改变图片路径

window.onload = function(){
var oimg = document.getElementById("outer").getElementsByTagName("img");

for (var i = 1;i< oimg.length;i++){//i从1开始，去掉第一个要被修改的图片
oimg[i].onmouseover = function(){
oimg[0].src = this.src;}
}
};