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How to change CSS style for unordered list item in master page using VB

Posted By:      Posted Date: October 02, 2010    Points: 0   Category :ASP.Net

When a user logs in to the site, I'm trying to change the color (to "white" -- but only when there is a logged in user) of a list item that is contained on my master page. It is not working. Below is the markup and error message. What am I doing wrong? Thank you.

<script runat="server" language="vbscript">
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

        Dim currentUser As MembershipUser = Membership.GetUser()

        If currentUser IsNot Nothing Then
            acme.Style("color") = "white"

        End If

    End Sub
    Protected advertise As System.Web.UI.HtmlControls.HtmlGenericControl


On same master page:

<div id="menu">

<ul> <li id="acme"><a href=".

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