$.fbuilder.typeList.push( { id:"fhidden", name:"Hidden", control_category:3 } ); $.fbuilder.controls[ 'fhidden' ]=function(){}; $.extend( $.fbuilder.controls[ 'fhidden' ].prototype, $.fbuilder.controls[ 'ffields' ].prototype, { title:"Hidden", ftype:"fhidden", predefined:"", display:function() { return '- available only in commercial version of plugin -'; }, editItemEvents:function() { $.fbuilder.controls[ 'ffields' ].prototype.editItemEvents.call(this); } });