Ext.states = [ ]; Ext.counties = [ ['110','CT','Capitol Plannin'],['120','CT','Greater Bridgep'],['130','CT','Lower Connectic'],['140','CT','Naugatuck Valle'],['150','CT','Northeastern Co'],['160','CT','Northwest Hills'],['170','CT','South Central C'],['180','CT','Southeastern Co'],['190','CT','Western Connect']]; // states DATASTORE var ds_states = new Ext.data.SimpleStore({ fields: ['id', 'state'], data : Ext.states }); // counties DATASTORE var ds_counties = new Ext.data.SimpleStore({ fields: ['id','state','county'], data : Ext.counties });