ASP: Disable/remove script reference programmatically

ASP: Disable/remove script reference programmatically

General idea
My general idea is to have mobile and desktop version of my site. Users
can switch versions with buttons on the bottom of the page. I'm using ASP
themes, so that I can easily switch themes depending on the required
version of the site.
The problem
Switching themes is great, but since I've got JavaScript files already
included in my project in the following ScriptManager in my master page:
<asp:ScriptManager runat="server" ID="sm">
<Scripts>
<asp:ScriptReference Path="~/Scripts/jquery-2.0.2.min.js" />
<asp:ScriptReference Path="~/Scripts/jQueryMobileBehaviour.js" />
<asp:ScriptReference Path="~/Scripts/Master.js" />
<asp:ScriptReference
Path="~/Scripts/jquery.mobile-1.3.1.min.js" />
</Scripts>
</asp:ScriptManager>
When the user switch to desktop version there are problems caused by
jquery.mobile-1.3.1.min.js and jQueryMobileBehaviour.js. Is there a way to
use two ScriptManagers (some sort of themes but for js files)?
What I've tried without success
My first approach was to remove the mobile JavaScript files from the
ScriptManager and then include them manually in the click event of the
button that switches to mobile version like that sm.Scripts.Add.
The second approach was to remove programmatically the mobile JavaScript
files like that sm.Scripts.Remove.
protected void CommandBtn_Click(Object sender, CommandEventArgs e)
{
switch (e.CommandName)
{
case "Desktop":
HttpContext.Current.Response.Cookies["theme"].Value =
"Desktop";
//sm.Scripts.Remove(new
ScriptReference("~/Scripts/jquery.mobile-1.3.1.min.js"));
break;
case "Mobile":
HttpContext.Current.Response.Cookies["theme"].Value =
"Mobile";
//sm.Scripts.Add(new
ScriptReference("~/Scripts/jquery-2.0.2.min.js"));
//Response.Redirect(Request.RawUrl);
break;
default:
break;
}
Page.Response.Redirect(Page.Request.Url.ToString(), true);
}
Both approaches didn't work.
To sum up the questions
Is there something wrong in my code - assuming that the paths should be
alright? Is there a better approach, which will allow me to switch
JavaScript files, like is done with the themes?