Can U set size of "New Page" ?

[Nick]

I have a hyperlink on my web site that directs people to
another web site. This produces a new window (as I
wanted), but is there a way of setting a size for the new
window, so as not to obscure the original page totally?
It's just that when they are redirected, it appears that
they have left my site completely. I know all they have
to do is either click the back button, or minimize the
new page, but a smaller window initially would in my case
be better.
Any suggestions, would be welcome.

Thanks

Nick..