[jQuery] Object doesn't support this property or method jquery-1.2.6.js, line 83 character 3

[will]

Hello:

Here is the offending line in IE7: return this.setArray
(jQuery.makeArray(selector));

OR in Firefox 3.0.10

line 81 jquery-1.2.6.js return jQuery( document )[ jQuery.fn.ready ?
"ready" : "load" ]( selector );

Sorry if I'm not providing enough detail...I'm pretty new to jQuery/
javascript. I assume it is a bug since the error is thrown from a core
jQuery script.

Thanks