Multiple pop up windows

I used the following script to create one pop up movie clip. How do I modify this code to identify for flash a number of different popup mcs? Wise ones, I would appreciate your help.
On the button:
on (release) {
getURL(“JavaScript:popup()”);
}
and on the HTML page:
<SCRIPT LANGUAGE=“JavaScript”>
function popup() {
window.open(‘reclaim.swf’,’’,‘toolbar=no,location=yes,directories=no,status=yes,menubar=yes,scrollbars=yes,resizable=yes,width=550,height=400,left=50,top=50’);
}
</script>
It seems the button should reference the specific mc? And the html?