function setItem( id ){
    var image = "c_btn_shiryolist_on";
    var manager = new CookieManager();
    var item_list_string = manager.getCookie("ITEM_LIST");
    var item_list = [];
    if ( item_list_string ) {
        item_list = item_list_string.split(",");
    }

    if ( item_list.indexOf( id ) != -1 ) {
        item_list = item_list.without( id );
        image = "c_btn_shiryolist_off";
        image_l = "c_btn_shiryolist_l_off";
    } else {
        item_list.push( id );
        image = "c_btn_shiryolist_on";
        image_l = "c_btn_shiryolist_l_on";
    }

    var tags = "item_cookie_" + id;
    document.images[tags].src = "/images/" + image + ".gif";
    if (document.images[tags+"#2"] !== undefined) document.images[tags+"#2"].src = "/images/" + image + ".gif";
    if (document.images[tags+"#3"] !== undefined) document.images[tags+"#3"].src = "/images/" + image + ".gif";
    if (document.images[tags+"#L"] !== undefined) document.images[tags+"#L"].src = "/images/" + image_l + ".gif";

    var result = item_list.uniq();
    manager.clearCookie("ITEM_LIST");
    manager.setCookie("ITEM_LIST", result.join(","));
}

function chkItem() {
    var manager = new CookieManager();
    var item_list_string = manager.getCookie("ITEM_LIST");
    var item_list = [];
    if ( item_list_string ) {
        return 'https://www.tsuushinsei-search.com/mail/';
    } else {
		txt = '一括資料請求リストに追加した学校はありません。';
        alert(txt);
		return false;
	}
}