Javascript Google Analytics problem

Hi, i have 1 site with three different brands (three ID numbers). I have made a javascript if-statement but it doesnt work. Somebody see some wrong here, I think it should work properly. Thanks in advance ;) $language and $brand is set...

<script type="text/javascript">

var accountId;
var url;

if($language == 'test') {
if($brand = '1') {
accountId = 'UA-xxxxx-1'
url = '1.com'
} else if ($brand = '2') {
accountId = 'UA-xxxxx-2'
url = '2.com'
} else if ($brand = '3') {
accountId = 'UA-xxxxx-3'
url = '3.com'
}

var _gaq = _gaq || [];
_gaq.push(['_setAccount', accountId]);
_gaq.push(['_setDomainName', url]);
_gaq.push(['_setAllowLinker', true]);
_gaq.push(['_trackPageview', '/' + window.location.host + '/' + window.location.pathname]);

(function() {
var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
})();

</script>

Most probably, the problem is that you are using the assignment instead of the equality operator.
if($language == 'test') {
if($brand == '1') {
accountId = 'UA-xxxxx-1'
url = '1.com'
} else if ($brand == '2') {
accountId = 'UA-xxxxx-2'
url = '2.com'
} else if ($brand == '3') {
accountId = 'UA-xxxxx-3'
url = '3.com'
}