<!--

var img=new Array();
img[0]=new Image();img[0].src="image/mainimg.jpg";
img[1]=new Image();img[1].src="image/mainimg01.jpg";
img[2]=new Image();img[2].src="image/mainimg02.jpg";
img[3]=new Image();img[3].src="image/mainimg03.jpg";

function change_image(name,num) {
document.images[name].src=img[num].src;
}

//-->