Function-call in Response.Write

[Patrick Marti]

I work with .Net c#
I like to show in the left side of a frame little images. If the user click
on a image, the big one should be shown in the right frame.
It works fine with the following code
============================
Response.Write("<a href=ImageCH/BERN/Gr/Gr1.jpg target=main><img
src=\"ImageCH/BERN/Kl/Kl1.jpg\">");
============================
But, is it also possible to call a function so I can also write texts and
doing some other thins in that main-page with the big picture?
Something like
==============================
Response.Write("<a onClick=ShowImage(MyPath) target=main><img
src=\"ImageCH/BERN/Kl/Kl1.jpg\">");
==============================

Many thanks for answering
Greetings Patrick Marti