[jQuery] Why report "handler.apply is not a function"

[James Hang]

in html:

  <script type="text/javascript" src="/new/js/jquery-1.2.6.min.js"></
script>
  <script type="text/javascript" src="/new/js/cms.js"></script>

<a class="Brand" href="#"><img src="check.gif"/></a>



in cms.js:


checkDeleteBrand = function(){
   window.confirm("Really want to check this brand?");
}

readyFunction = function(){

  $('a.Brand').mouseover("checkBrand");

$(document).ready(readyFunction);


When I move my mouse on the check.gif, it will report a error message:
"handler.apply is not a function " in firefox Error console, line
number is 26 in the jquery file.


Can you help to sort it out?

Thanks!