Set your input as required="true" then catch the "enter" key and change focus to an otherInput like below; Run it on your .xhtml
page between <script type="text/javascript"> </script>
tags.
$( 'form' ).bind('keypress', function(e){
if ( e.keyCode == 13 ) {
document.getElementById('Input10_input').focus();
}
});
It works also for showcase.
Good Luck!