[Javascript] get link to execute script rather than load page

[Lau]

How do I get a link to execute some script rather than load another page?
(no I don't want to use a button)

The best I can get is:

<A HREF='#' onclick='Javascript: OpenNewWindow()'>

However, this scrolls the page back up to the top - which I don't want to
happen.

I tried

<A HREF='Javascript: OpenNewWindow()'>
and
<A HREF='Javascript: void OpenNewWindow()'>

but they both give me a syntax error

Can anyone tell me how to do this?

Peace
Lau