Alternate method to dynamic Server-Side include

Hi,

I'm trying to use <%=include(URL)%> which works fine when I hard code the "URL" as in:

<%=include(text.html)%>

Although in my scenerio, I'm trying to pull the URL from a custom item attribute which doesnt work.  Below is the code I'm trying to make work:

<%=include(<%=getCurrentAttribute('item','custitem_url')%>)%>

Am I doing this wrong or is it not possible to make it work?

If not, is there an alternate method to included a document other than using the server-side include?

Thanks
Dan