if statement based on url and query string

[Paul_808]

Hi,
I am working with a classic ASP website and I only know the fundamentals of programming. I am trying to display an image everywhere on my site except for one page. This page would receive a different image.

By using the following code I was able to have the image change for a section of my site(site.com/page.asp) but I haven't been able to figure out how to change it for a specific page (site.com/page.asp?ID=123).

<% IF Request.ServerVariables("SCRIPT_NAME") = "/AboutUs.asp" THEN %>
				<img src="/img/img.jpg" border="0" />
                <% ELSE %>
			<a href="/AboutUs.asp?ID=200"><img src="/img/img2.jpg" border="0" /></a>
			<% END IF  %>

I found another forum suggesting to use the following code but pasting it in the table cell I want the image to appear in broke the site. If the following code is the correct solution I am not sure how to use it.

var url = "<%=Request.ServerVariables("SERVER_NAME") & Request.ServerVariables("URL") & "?" & Request.Querystring%>";
if(url == "site.com/page.asp?ID=123")
{
    //Do stuff
}

Any help would be greatly appreciated. Thanks!
Paul