<form id="checkout_form_id" action="http://www.appblog.cn/checkout" method="post" target="_blank">
<input type="hidden" id="token" name="token" >
<input type="hidden" id="encrypt_data" name="encrypt_data" >
</form>
$("#button_id").click(function(){
$('#checkout_form_id').submit();
return false;
});