Javascript 2个Java脚本彼此不工作

我有两个Java脚本没有一起工作。它们都是分开工作的，但放在一起只有一个工作。我就是这么叫他们的

    window.onload = initImages;
    window.onload = countdown(year,month,day,hour,minute);  

如果我把“window.onload=initImages；”放在“倒计时”之后，那么只有图像起作用，如果倒计时在图像之后保持这种状态，那么只有倒计时起作用

// JavaScript Document


function initImages() {
    for (var x = 0; x < document.images.length; x++)
    {
        document.images[x].onclick = povecana;
    }
}
function povecana() {

    dir = "images/" + this.id + ".jpg";

    if (undefined != window.proz)
    {
        proz.style.opacity = 0.6;
    }
    proz = document.getElementById(this.id);
    proz.style.opacity = 1;

    slika = document.getElementById("odabranaSlika");   

    slika.style.display= "block";
    slika.innerHTML='<img src='+ dir +' " width="100%" height="450px" />';

    jabuke = document.getElementById("default");
    jabuke.style.display= "none";   

    tekst = document.getElementById("tekstOdabrane");
    tekst.style.display = "block";

    if (this.id=="slika1")
    tekst.innerHTML="Idared je američka sorta nastala 1935.";
    else (this.id=="slika2")
    tekst.innerHTML="Fuji je zasigurno jedna od atraktivnijih";
}

/*
Count down until any date script-
By JavaScript Kit (www.javascriptkit.com)
Over 200+ free scripts here!
Modified by Robert M. Kuhnhenn, D.O. 
on 5/30/2006 to count down to a specific date AND time,
on 10/20/2007 to a new format, and 1/10/2010 to include
time zone offset.
*/

/*  Change the items noted in light blue below to create your countdown target date and announcement once the target date and time are reached.  */
var current="Winter is here!";//-->enter what you want the script to display when the target date and time are reached, limit to 20 characters
var year=2013;      //-->Enter the count down target date YEAR
var month=12;        //-->Enter the count down target date MONTH
var day=21;         //-->Enter the count down target date DAY
var hour=18;        //-->Enter the count down target date HOUR (24 hour clock)
var minute=38;      //-->Enter the count down target date MINUTE
var tz=+1;          //-->Offset for your timezone in hours from UTC (see http://wwp.greenwichmeantime.com/index.htm to find the timezone offset for your location)

//-->    DO NOT CHANGE THE CODE BELOW!    <--
var montharray=new Array("Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec");

function countdown(yr,m,d,hr,min){
    theyear=yr;themonth=m;theday=d;thehour=hr;theminute=min;
    var today=new Date();
    var todayy=today.getYear();
    if (todayy < 1000) {todayy+=1900;}
    var todaym=today.getMonth();
    var todayd=today.getDate();
    var todayh=today.getHours();
    var todaymin=today.getMinutes();
    var todaysec=today.getSeconds();
    var todaystring1=montharray[todaym]+" "+todayd+", "+todayy+" "+todayh+":"+todaymin+":"+todaysec;
    var todaystring=Date.parse(todaystring1)+(tz*1000*60*60);
    var futurestring1=(montharray[m-1]+" "+d+", "+yr+" "+hr+":"+min);
    var futurestring=Date.parse(futurestring1)-(today.getTimezoneOffset()*(1000*60));
    var dd=futurestring-todaystring;
    var dday=Math.floor(dd/(60*60*1000*24)*1);
    var dhour=Math.floor((dd%(60*60*1000*24))/(60*60*1000)*1);
    var dmin=Math.floor(((dd%(60*60*1000*24))%(60*60*1000))/(60*1000)*1);
    var dsec=Math.floor((((dd%(60*60*1000*24))%(60*60*1000))%(60*1000))/1000*1);
    if(dday<=0&&dhour<=0&&dmin<=0&&dsec<=0){
        document.getElementById('count2').innerHTML=current;
        document.getElementById('count2').style.display="inline";
        document.getElementById('count2').style.width="390px";
        document.getElementById('dday').style.display="none";
        document.getElementById('dhour').style.display="none";
        document.getElementById('dmin').style.display="none";
        document.getElementById('dsec').style.display="none";
        document.getElementById('days').style.display="none";
        document.getElementById('hours').style.display="none";
        document.getElementById('minutes').style.display="none";
        document.getElementById('seconds').style.display="none";
        document.getElementById('spacer1').style.display="none";
        document.getElementById('spacer2').style.display="none";
        return;
    }
    else {
        document.getElementById('count2').style.display="none";
        document.getElementById('dday').innerHTML=dday;
        document.getElementById('dhour').innerHTML=dhour;
        document.getElementById('dmin').innerHTML=dmin;
        document.getElementById('dsec').innerHTML=dsec;
        setTimeout("countdown(theyear,themonth,theday,thehour,theminute)",1000);
    }
}

//JavaScript文档
函数initImages（）{
对于（var x=0；x输入达到目标日期和时间时希望脚本显示的内容，最多20个字符
风险值年份=2013年；//-->输入每年的倒计时目标日期
变量月份=12；//-->输入每月的倒计时目标日期
var日=21；//-->输入倒计时目标日期
var小时=18；//-->输入倒计时目标日期小时数（24小时制）
变量分钟=38；//-->输入倒计时目标日期分钟
var tz=+1；//-->以小时为单位的时区与UTC的偏移量（请参见http://wwp.greenwichmeantime.com/index.htm 查找您所在位置的时区偏移）
//-->不要更改下面的代码！
它们正在被覆盖。不能将两个值赋给一个变量

比如说,

x = 5;
x = 10;

当然，
x
将是
10
。嗯，你也一样：
window.onload
类似于
x
，数字类似于你的函数

window.onload = func1;
window.onload = func2;

在这种情况下，将始终调用func 2，因为在第2条语句之后，您已将onload处理程序从func1更改为func2

试一试

你能从第一个函数调用第二个函数吗？非常感谢！答案很快：D
window.onload = func1;
window.onload = func2;

window.onload = function(){
  func1();
  func2();
}