I think I have forgotten something (probably very simple) in my set-up, but cannot figure out what it is. Here is my page header:

When the page renders I get errors like

Webpage error details

User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; MathPlayer 2.10; SLCC1; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 1.1.4322; .NET CLR 3.0.30729)
Timestamp: Fri, 18 Jun 2010 14:19:03 UTC

Message: Object doesn't support this property or method
Line: 17
Char: 1
Code: 0
URI: http://localhost/scripts/jquery142/jquery.ui.autocomplete.js

Message: Object doesn't support this property or method
Line: 17
Char: 1
Code: 0
URI: http://localhost/scripts/jquery142/jquery.ui.sortable.js

Message: Object doesn't support this property or method
Line: 17
Char: 1
Code: 0
URI: http://localhost/scripts/jquery142/jquery.ui.resizable.js

Anyone able to see what I have overlooked or what I am doing wrong?