Have started to develop a widget to be used with FX/TB etc using HTML/JS/JQuery.

I use Firefox/Firebug to display the widget. Also Firebug doesn't display an error, the code -- located and executed locally -- throws a lot of warnings (see below).

How to "solve" those issues? I don't see any reference to my "code" (html, js, css)
Thanks for helping

1. Warning: reference to undefined property persistedState.panelState[panel.name]
2. Source file: chrome://firebug/content/firebug.js
3. Line: 1281
4.  ----------
5. Warning: reference to undefined property this[arguments[0]]
6. Source file: XPCSafeJSObjectWrapper.cpp
7. Line: 450
8.  ----------
9. Warning: anonymous function does not always return a value
10. Source file: file:///D:/!E_rmFXcurrent/jQuery/jQ/jquery-1.3.min.js
11. Line: 3, Column: 115
12. Source code:
13. viousSibling",Q,R,S,T,U)}},find:{ID:function(Q,R){if(R.getElementById){var P=R.getElementById(Q[1]);return P?[P]:[]}},NAME:function(P,Q){return Q.getElementsByName?Q.getElementsByName(P[1]):null},TAG:function(P,Q){return Q.getElementsByTagName(P[1])}},pre
14.  ----------
15. Warning: anonymous function does not always return a value
16. Source file: file:///D:/!E_rmFXcurrent/jQuery/jQ/jquery-1.3.min.js
17. Line: 2, Column: 229
18. Source code:
19. this[G],H),G>0?D.cloneNode(true):I)}}if(F){n.each(F,y)}}return this;function K(N,O){return M&&n.nodeName(N,"table")&&n.nodeName(O,"tr")?(N.getElementsByTagName("tbody")[0]||N.appendChild(N.ownerDocument.createElement("tbody"))):N}}};n.fn.init.prototype=n.