// JavaScript Document

// ランダムに画像を表示する
window.onload= function() {
/*
pre_img = new Array();
images = ["images/captions/cap1.jpg", "images/captions/cap2.jpg", "images/captions/cap3.jpg", "images/captions/cap4.jpg", "images/captions/cap5.jpg", "images/captions/cap6.jpg", "images/captions/cap7.jpg"];
for (i=0; i<images.length; i++)
{
	pre_img[i] = new Image();
	pre_img[i].src = images[i];
}
*/
caps = new Array();
cmt = new Array();
// 画像のアドレス(数字はジャンプ先のアドレスと対応)
caps[0] = "images/captions/cap1.jpg";
caps[1] = "images/captions/cap2.jpg";
caps[2] = "images/captions/cap3.jpg";
caps[3] = "images/captions/cap4.jpg";
caps[4] = "images/captions/cap5.jpg";
caps[5] = "images/captions/cap6.jpg";
caps[6] = "images/captions/cap7.jpg";
caps[7] = "images/captions/cap8.jpg";
// 画像のalt
cmt[0] = "";
cmt[1] = "";
cmt[2] = "";
cmt[3] = "";
cmt[4] = "";
cmt[5] = "";
cmt[6] = "";
cmt[7] = "";

n = Math.floor(Math.random()*caps.length);
var so = "<h1 class='top'><img src='"+caps[n]+"' alt='"+cmt[n]+"' width='862' height='250' /></h1>";
document.getElementById("title").innerHTML = so;
}