如何将值发布到网址，同时在模态窗口中打开网址？

I have this

HTML

 <a class="iframe button pink" href="http://www.google.com" > 
 Pay Now <link rel="stylesheet" href="http://www.fethr.com/clients/res/buttonmodal.css">
 <script src="http://www.fethr.com/clients/res/buttonmodal.js"></script></a>

This is a button on which if I click,the link opens in a modal window.

I have a form in which I add some values to it,when I click submit on the form it should post the values to "www.google.com",which is a web service (though its not :P,here for demo purpose"),at the same time open the link in the modal window. Is this possible?

All Im trying to do is,when I click submit on the form,the values should be posted to the url as well as opened in a modal window.