I don't write JS all the time, but I know that you can create a form with hidden fields, and have your function do a form.submit(). It doesn't use the CGI module, but it does avoid the ugly get method.
<html>
<body>
<form name="myform" action="http://perlmonks.org/index.pl?" method="po
+st">
<input type="hidden" name="node" value="sporty">
</form>
<a href="#" onClick="myform.submit()">clicky!</a>
</body>
</html>
I did this using safari. Try it in moz, try it in ie.
Update: Case of morning eyes. I read through the thread forgetting it was "new window".
Play that funky music white boy..