It's a little difficult without knowing exactly what the hyperlink does or
what the "result" is, but one possible way would be to add an <asp:Panel>
tag and set its Visible property to false initially. Place the control(s)
for the "result" in the <asp:Panel> tag. When the hyperlink posts back, set
the Visible property of the <asp:Panel> tag to true if the "result" is
there...

the second part should be an iframe. set the hyperlink target to the
iframe name. you can use a client onclick event to create, or make the
iframe visible.

-- bruce (sqlwork.com)