var language_selector={add:function(that){var size=this.getSize();if(size>=5)return false;var $new=$(that).parent().clone();$(that).parent().parent().append($new).filter('textarea,select').val('');$(that).replaceWith('<img onClick="language_selector.del(this)" src="http://site.hellochina.com/img/minus.gif" />');},del:function(that){$(that).parent().remove();},getSize:function(){return $('.mastered-lang').size();}}