// create the Data Store
var store = new Ext.data.JsonStore({
    root: 'topics',
    totalProperty: 'totalCount',
    idProperty: 'articleid',
    

    fields: [

        'articleid',
        'articletype',
        'title',
        'tags',
        'author',
        {name: 'datepost', mapping: 'datepost', type: 'date', dateFormat: 'timestamp'},  
        'excerpt',
        {name: 'comments', type: 'int'},
        'imageprev'      

    ],

    url: 'http://new.plastik.fr/php/articledb.php'
    

});
store.setDefaultSort('datepost', 'desc');