JQuery is not working in dnn 6.2.6

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.NET3.5

.NET

jQuery

Hi I am Using Dnn 6.2.6 in my project development.I am in need of developing a directory structure using JQuery.When i tried to load jquery plugins as we do in normal web applications,its not working..When i tried same thing in a normal web application i got my required directory structure...

My Jquery settings in Host->Host settings are

Installed Jquery Version:1.7.2

installed Jquery UI Version:1.8.16

Use Jquery debug Version:Unchecked

Use Hosted Jquery Version:Unchecked

Hosted Jquery URL: http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js

Hosted jquery UI URL: http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.16/jquery-ui.min.js

i hav tried to include

DotNetNuke.Framework.jQuery.RequestRegistration();
 DotNetNuke.Framework.jQuery.RequestUIRegistration(); 

in the Page_init method but no use
also tried to include my jquery plugins as follows

<%@ Register TagPrefix="dnn" Namespace="DotNetNuke.Web.Client.ClientResourceManagement"
    Assembly="DotNetNuke.Web.Client" %>
<dnn:DnnJsInclude ID="DnnJsInclude1" runat="server" FilePath="js/jquery.cookie.js"
    PathNameAlias="SkinPath" />
<dnn:DnnJsInclude ID="DnnJsInclude2" runat="server" FilePath="js/jquery.treeview.js"
    PathNameAlias="SkinPath" />
<dnn:DnnJsInclude ID="DnnJsInclude3" runat="server" FilePath="css/jquery.treeview.css"
    PathNameAlias="SkinPath" />
<dnn:DnnJsInclude ID="DnnJsInclude4" runat="server" FilePath="css/folderView.css"
    PathNameAlias="SkinPath" />

but no use i hav searched many dnn discussions on this issue but no use..So Please help me

thanks