Hi,

You should not explicitly link to a specific jQuery version as this could conflict with other requests or needs on the page. Better request jQuery with the appropriate skin object or in code behind.

Skin (ascx file):

<%@ Register TagPrefix="dnn" TagName="JQUERY" Src="~/Admin/Skins/jQuery.ascx" %>
<dnn:JQUERY ID="dnnjQuery" runat="server" />

Code behind (C#) - DNN 5.0 to 7.1:

DotNetNuke.Framework.jQuery.RequestRegistration();

Code behind - DNN 7.2 or later:

JavaScript.RequestRegistration(CommonJs.jQuery);

See this Wiki entry for details.

Happy DNNing!
Michael