Multiple window.open not working in IE - php

Question

I've got an ahref that when clicked, changes the content of 3 iFrames. Here's the code:
<a href='weekone.php' target='weekone' onclick='window.open("weektwo.php","weektwo"); window.open("weekthree.php","weekthree")'>Link</a>
Now this works perfectly in Firefox, Safari etc but doesn't work in IE. Can anyone shed some light on this problem for me please? I can't use a Javascript because I'm working within a PHP framework and the iFrame links are called from the database.
UPDATE
It appears the issue lies with spaces in the URLs called from window.open! As I'm calling info from a database (ie - "weektwo.php?Name=Bob and Dave") how can I get around this??

Answer 1

What version of IE?
Tested on IE 8 and this worked perfectly.
<a href='test.htm' target='weekone' onclick='window.open("test.htm","weektwo"); window.open("test.htm","weekthree")'>Link</a>
<iframe name='weekone' id='weekone' width=100 height=100></iframe>
<iframe name='weektwo' id='weektwo' width=100 height=100></iframe>
<iframe name='weekthree' id='weekthree' width=100 height=100></iframe>

Answer 2

If you're trying to open links in an <iframe>, it's probably easier to do
document.querySelector('iframe[name="weekone"]').src='test.htm';
document.querySelector('iframe[name="weektwo"]').src='test.htm';
document.querySelector('iframe[name="weekthree"]').src='test.htm';
(I've used document.querySelector because it's the easiest, but of course you can use document.getElementById or whatever way you want to get a reference to the <iframe>.)

Answer 3

On the back of the comments, try adding "return true;" to the end of the onclick (untested)...
<a href='weekone.php' target='weekone' onclick='window.open("weektwo.php","weektwo"); window.open("weekthree.php","weekthree"); return true;'>Link</a>
UPDATE
In light of the updated question, try "HTML Encoding" the query strings using the PHP function "htmlentities".
I'm basing the following on your original (pre-edited) code. So in this case I apologise for asking you to edit it, but I did ask you to show exactly what was being sent to the browser...
<a href='weekone.php?Name=<?=htmlentities($i[Name])?>' target='<?=$i[Name]?> weekone' onclick='window.open("weektwo.php?Name=<?=htmlentities($i[Name])?>","<?=$i[Name]?> weektwo"); window.open("weekthree.php?Name=<?=htmlentities($i[Name])?>","<?=$i[Name]?> weekthree")'>Link</a>
UPDATE 2 (due to me being stupid)
It shouldn't be "HTML Encoding" it should be "URL Encoding" using "urlencode"...
<a href='weekone.php?Name=<?=urlencode($i[Name])?>' target='<?=$i[Name]?> weekone' onclick='window.open("weektwo.php?Name=<?=urlencode($i[Name])?>","<?=$i[Name]?> weektwo"); window.open("weekthree.php?Name=<?=urlencode($i[Name])?>","<?=$i[Name]?> weekthree")'>Link</a>