javascript怎样在一个页面中加三个js

window.onload = rolloverInit;
function rolloverInit() {
for (var i=0; i<document.links.length; i++)
var linkObj = document.links[i];
if (linkObj.className) {
var imgObj = document.getElementById(linkObj.className);
if (imgObj) {
setupRollover(linkObj,imgObj);
}
}
}
}

function setupRollover(thisLink,textImage) {
thisLink.imgToChange = new Array;
thisLink.outImage = new Array;
thisLink.overImage = new Array;
thisLink.imgToChange[0] = textImage;

thisLink.onmouseout = rollOut;
thisLink.onmouseover = rollOver;    
thisLink.outImage[0] = new Image();
thisLink.outImage[0].src = textImage.src;



thisLink.overImage[0] = new Image();
thisLink.overImage[0].src = "images/" + thisLink.id + "Text.gif";



var rolloverObj = document.getElementById(thisLink.id + "Img");
if (rolloverObj) {

    thisLink.imgToChange[1] = rolloverObj;


    thisLink.outImage[1] = new Image();
    thisLink.outImage[1].src = rolloverObj.src;


    thisLink.overImage[1] = new Image();
    thisLink.overImage[1].src = "images/" + thisLink.id + "_on.gif";

} 

}

function rollOver() {
for (var i=0;i<this.imgToChange.length; i++) {
this.imgToChange[i].src = this.overImage[i].src;

}

}

function rollOut() {
for (var i=0;i<this.imgToChange.length; i++) {
this.imgToChange[i].src = this.outImage[i].src;

}

}
window.onload = rotate;

var thisAd = 0;
function rotate() {
var adImages = new Array("a38.png","a37.jpg","a36.png");
thisAd++;
if (thisAd == adImages.length) {
thisAd = 0;
}
document.getElementById("adBanner").src = adImages[thisAd];

setTimeout(rotate, 2 * 1000);

}
window.onload = initAll;
function initAll(){
document.getElementById("过去").onclick=saysomething;
document.getElementById("现在").onclick=saysomething;
document.getElementById("未来").onclick=saysomething;
}
function saysomething(){
switch(this.id){
case "过去":
alert("过去就是一首诗，思念的美");
break;
case "现在":
alert("现在就是一曲歌，旋律的荡漾");
break;
case "未来":
alert("未来就是一道桥，神秘且向往");
break;
default:

}
}

将js函数写在里面，想加几个就加几个。

直接不是回过你了，要用attachEvent或者addEventListener，不能直接window.onload=xxxx来添加事件

http://ask.csdn.net/questions/187584

 function addEvent(o,evt,func){
  if(o.attachEvent)o.attachEvent('on'+evt,func);
    else if(o.addEventListener)o.addEventListener(evt,func,false);
}
//window.onload = rolloverInit;
 addEvent(window,'load',rolloverInit)

//window.onload = initAll; 
 addEvent(window,'load',initAll)

//window.onload = rotate;
 addEvent(window,'load',rotate)

不明白你在说什么，不知道你的要求是什么

你说加入一个页面加入3个js，直接引入不就行了。

**** 用一个对象loaction的属性location.href='URL'

**** 用一个对象loaction的属性location.href='URL'

没太明白你要问什么，你的意识是，调用几个js函数吗，写在方法里面，就可以吗

到加在几个写几个加载语句不就行了么，没明白你要问的~

给你一个缓存加载队列的函数

 function addLoadEvent(func){
 var oldonload = window.onload;
 if(typeof window.onload != 'function'){
 window.onload = func ;
 }else{
 window.onload = function(){
 func();
 oldonload();
 }
 }
 }

然后直接addloadEvent(要执行的函数名);