// イメージ配列
var doimg; doimg = new Array;

// 先読み
ImgPreload('link1', '../../img/btn_profile_a.gif', '../../img/btn_profile_b.gif');
ImgPreload('link2', '../../img/btn_zosyo_a.gif', '../../img/btn_zosyo_b.gif');
ImgPreload('link3', '../../img/btn_environment_a.gif', '../../img/btn_environment_b.gif');
ImgPreload('link4', '../../img/btn_icyu_a.gif', '../../img/btn_icyu_b.gif');
ImgPreload('link5', '../../img/btn_manufactur_a.gif', '../../img/btn_manufactur_b.gif');
ImgPreload('link6', '../../img/btn_onlineshop_a.gif', '../../img/btn_onlineshop_b.gif');
ImgPreload('link7', '../../img/btn_shosei_a.gif', '../../img/btn_shosei_b.gif');
ImgPreload('link8', '../../img/btn_inquiry_a.gif', '../../img/btn_inquiry_b.gif');
ImgPreload('link9', '../../img/btn_link_a.gif', '../../img/btn_link_b.gif');
ImgPreload('link10', '../../img/btn_coralspa_a.gif', '../../img/btn_coralspa_b.gif');
ImgPreload('link11', '../../img/btn_costcut_a.gif', '../../img/btn_costcut_b.gif');


/* プリロード */
function ImgPreload() {
	var N = ImgPreload.arguments[0];
	doimg[N] = new Image();
	doimg[N][0] = new Image();
	doimg[N][0].src = ImgPreload.arguments[1];
	doimg[N][1] = new Image();
	doimg[N][1].src = ImgPreload.arguments[2];
}

/* ロールオーバー */
function ImgChenge() {
	var ID = ImgChenge.arguments[0];
	var N  = ImgChenge.arguments[1];
	document.images[ID].src = doimg[ID][N].src;
}