var Page=Backbone.Model.extend();var Pages=Backbone.Collection.extend({model:Page});var Sect=Backbone.Model.extend({initialize:function(){this.pages=new Pages();},validate:function(attrs){if(!this.pages.get(attrs.activePage)){return"Can't find page "+ attrs.activePage+" in section "+ this.id;}}});var Sects=Backbone.Collection.extend({model:Sect});var App=Backbone.Model.extend({initialize:function(){this.sects=new Sects();}},{title:document.title,txt2name:function(text){return $.trim(text).toLowerCase().replace(/\s+/g,'-');}});