// eccubeカート処理
function ProductInCart( winn, product_id , quantity ) {
    //var url = "http://localhost/eccube/products/detail.php?product_id=" + product_id;
    var url = "http://www.eirakuya.jp/eccube/products/detail.php?product_id=" + product_id;
    //var url = "http://eirakuya.jp/eccube/_dev/index.php"; 
    window.open("", winn).focus();
    $("#cartForm").attr("target", winn);
    $("#cartForm").attr("action", url);
    $("#cartForm").attr("method", "post");
    $("input:hidden[name=product_id]").val( product_id );
    $("input:hidden[name=quantity]").val( quantity );
    $("#cartForm").submit();
    return false;
}