The page is opened in the wrong target window

[staeri]

I have the following code attached to an ImageButton which opens a page
in a new window:

ImageButton2.OnClientClick =
"document.forms[0].target='page3';document.forms[0].action='Invoice_create.aspx';"

The problem is that when I click a button or a link in the original
window after that everything is opened in a new window not in the
original target window. It looks like I have to reset this somehow
after running the code above.

Is there a solution to this?

Regards,

S