today=new Date();
jran=today.getTime();
function rnd() {
ia=9301;
ic=49297;
im=233280;
jran = (jran*ia+ic) % im;
return jran/(im*1.0);
};
function rand(number) {
return Math.ceil(rnd()*number);
};
document.write("<center>");
for(i=1;i<=1;i++) {
myNum=(rand(4)); //改成你要隨機顯示的圖片數；
if(myNum == 1) document.write("<a href='http://www.jeff-blog.com/wedding/2010_0103'><img src='http://www.jeff-blog.com/wed/20100103/post/IMG_139.jpg'></a>"); //圖片路徑，可用http://
if(myNum == 2) document.write("<a href='http://www.jeff-blog.com/wedding/2010_0103'><img src='http://www.jeff-blog.com/wed/20100103/post/IMG_186.jpg'></a>");
if(myNum == 3) document.write("<a href='http://www.jeff-blog.com/wedding/2010_0103'><img src='http://www.jeff-blog.com/wed/20100103/post/IMG_239.jpg'></a>");
if(myNum == 4) document.write("<a href='http://www.jeff-blog.com/wedding/2010_0103'><img src='http://www.jeff-blog.com/wed/20100103/post/IMG_360.jpg'></a>");

else {
document.write();
}
};
document.write("</center>");