I have not changed any of the defaults, below a few lines of code if that helps:
......
Code:
var overviewGrid = new Ext.grid.GridPanel ({
id : 'overviewGrid' + id,
autoHeight : false,
autoWidth : true,
columns : overviewColumnModel,
store : tomcatOverviewStore,
loadMask : true,
features : [filters],
autoExpandColumn : 'managedBy'
});
tomcatOverviewStore.load();
tabs.add({
title : recName ,
id : id,
closable : true,
border : false,
iconCls : 'icon-' + recKey,
items : overviewGrid,
autoScroll : true
}).show();
Ext.getCmp( id ).on( 'close', function() {
releaseToolbar(); // Just deactivate some menu items
});
.....
I could provide you with more details if you let me know what is useful to you