// JavaScript Document
<!--ボタンロールオーバー用のJS -->
var img = new Array();

img[0]=new Image(); img[0].src="img/contents/contents01_movbtn_on.gif";
img[1]=new Image(); img[1].src="img/contents/contents01_movbtn_ov.gif";
img[2]=new Image(); img[2].src="img/contents/contents03_movbtn_on.gif";
img[3]=new Image(); img[3].src="img/contents/contents03_movbtn_ov.gif";

function over(no,id) {
document.images[id].src = img[no].src;
}