Javascript popups that open in same window causing focus problem

Question

I have been using javascript popups in actionscript buttons
for some time with no issues. However, on a specific movie I have 2
button links, each of which opens a pdf file. I need each pdf to
open using the same new window to avoid multiple new windows
opening.
This works fine on the first link I open - the new window
appears on top of the main window. The second link, however, opens
underneath the main window despite the focus() code. This only
happens in IE - works fine in Firefox.
Code used:
link3_btn.onRelease = function() {
getURL
("javascript:NewWindow=window.open('docs/first.pdf','newWin22','width=700,height=500,left =1
0,top=10,toolbar=No,location=No,scrollbars=Yes,sta
tus=Yes,resizable=Yes');NewWindow.focus();void(0); ");
link4_btn.onRelease = function() {
getURL
("javascript:NewWindow=window.open('docs/second.pdf','newWin22','width=700,height=500,lef t=
10,top=10,toolbar=No,location=No,scrollbars=Yes,st
atus=Yes,resizable=Yes');NewWindow.focus();void(0) ;");
Any help would be appreciated. Thanks.

Answer 1

This is how the code should look:
link3_btn.onRelease = function() {
getURL
("javascript:NewWindow=window.open('docs/first.pdf','newWin22','width=700,
height=500,left=10,top=10,toolbar=No,location=No,scrollbars=Yes,status=Yes
,resizable=Yes');NewWindow.focus();void(0); ","_self");
link4_btn.onRelease = function() {
getURL
("javascript:NewWindow=window.open('docs/second.pdf','newWin22','width=700,height=500,lef t=
10,top=10,toolbar=No,location=No,scrollbars=Yes,st
atus=Yes,resizable=Yes');NewWindow.focus();void(0) ;","_self");
}