/* ROLLOVER */

var prImg = new Array();

set_array("top1", "http://shincomi.webshogakukan.com/school/images/t2.gif",      "http://shincomi.webshogakukan.com/school/images/t2on.gif");
set_array("top2", "http://shincomi.webshogakukan.com/school/images/toppage.gif", "http://shincomi.webshogakukan.com/school/images/toppage_on.gif");

function set_array(n, m_out, m_over) {
	prImg[n] = new Array();
	prImg[n][0] = new Image(); prImg[n][0].src = m_out;
	prImg[n][1] = new Image(); prImg[n][1].src = m_over;
}

function change(n, i) {
	document.images[n].src = prImg[n][i].src;
}