How to remove header from alert navigator.notification.alert

How can we remove the header on alert and confirm notification dialog.

 navigator.notification.alert("Your request has been sent."  ,function(){}
            ,'Wants to remove this header','OK')

Hm, I’m not sure what you mean, can you show me a visual of this?

i want to remove the header of popup where i am displaying logout i dont want this.

navigator.notification.alert("Your request has been sent."  ,function(){}
            ,'Wants to remove this header','OK')


First Popup

I want second one popup .can we cutomize this way.

Second Popup