Ext JS 4: Override timeouts

 Ext.Ajax.timeout= 120000; // 120 seconds
2 Ext.override(Ext.form.Basic, { timeout: Ext.Ajax.timeout / 1000 });
3 Ext.override(Ext.data.proxy.Server, { timeout: Ext.Ajax.timeout });
4 Ext.override(Ext.data.Connection, { timeout: Ext.Ajax.timeout });