ExternalInterface.call Causes JAVASCRIPT ERROR??

Question

my AS3.0 is this:
btn_mc.addEventListener(MouseEvent.CLICK,journey_popup);
function journey_popup(e) {
ExternalInterface.call("journey_wow_popup");
my javascript is this:
function journey_wow_popup () {
window.open('journey_pricing.php','_blank',
'height=200,width=350,status=yes,toolbar=no,menubar=no,location=no');
My flash OBJET ID and movie name is "journey_wow"
I get this javascript error when I click btn:
Error: "journey_wow" is undefined
I tried this on 4 computers, I never get the the error in FF,
I got the error on 2/4 of the computers in IE and didnt get the
Error in the other 2.
So sometimes it works in IE and sometimes it doesn't. Also my
flash element is not in a form.
you can view it here:
http://www.sussexjewelers.com/product.php?pid=1390
(its the big red box with yellow star)
Please help!!
Thanks!

Answer 1

Below is my embeding script, thanks.
<script language="javascript">AC_FL_RunContent =
0;</script>
<script src="AC_RunActiveContent.js"
language="javascript"></script>
<script language="javascript">
if (AC_FL_RunContent == 0) {
alert("This page requires AC_RunActiveContent.js.");
} else {
AC_FL_RunContent(
'codebase', '
http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,0,0',
'width', '626',
'height', '115',
'src', 'journey_wow',
'quality', 'high',
'FlashVars',
'journey_price=<?=round($prod_field['prod_price'][0])?>',
'pluginspage', '
http://www.macromedia.com/go/getflashplayer',
'align', 'middle',
'play', 'true',
'loop', 'true',
'scale', 'showall',
'wmode', 'transparent',
'devicefont', 'false',
'id', 'journey_wow',
'bgcolor', '#ffffff',
'name', 'journey_wow',
'menu', 'true',
'allowFullScreen', 'false',
'allowScriptAccess','always',
'movie', 'journey_wow',
'salign', ''
); //end AC code
</script>