jquery ui button - use only secondary icon

jquery ui button - use only secondary icon

Hi,

I want to make a simple "next" button where the icon (>>) is only displayed on the right.

I tried the following
  1.     $(".fwdBtn").button({
            icons: {
                primary: 'ui-icon-null',
                secondary: 'ui-icon-seek-next'
            }
        });    




where ui-icon-null got width:0; but there is still a large empty space on the left hand of the button.
Is there a way to use only the secondary icon without the primary?

Thanks in advance for answers