Using Google's reCaptcha within Siebel OpenUI.

I'm trying to use Google's reCaptcha within Siebel OpenUI. Since the reCaptcha widget is accessed by calling Google's API using a URL I'm not sure how to incorporate that within Siebel.I can use the following within a standard HTML page and display the widget and also capture the user response but how to inject this in Siebel? I can display the widget within siebel by editing the web template file but how do I capture the user response? I am assuming it should be using a custom PM/PR. Does anyone know how the following can be used within a custom