I made a little trick, in need to put multiple toolbars in one content panel, maybe it'll be useful for someone(for me is much useful):
You can attach any number of toolbars, following this pattern.
var tb = new Ext.Toolbar(panel.el);
var tb2 = new Ext.Toolbar(tb2container);
A screenshot is also attached.
If someone has other (better) way to to this, please post here and let me know.
Note: Ext.DomHelper.append(...) appends a <div /> tag. I suppose this is not a problem, since this div isn't closed-I use it only as separator.