JAVA SCRIPT - POPUP MOVE TO CENTER

function center(){
var x,y;
if (self.innerHeight) { // IE 외 모든 브라우저
x = (screen.Width - self.innerWidth) / 2;
y = (screen.Height - self.innerHeight) / 2;
}else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict 모드
x = (screen.Width - document.documentElement.clientWidth) / 2;
y = (screen.Height - document.documentElement.clientHeight) / 2;
}else if (document.body) { // 다른 IE 브라우저( IE < 6)
x = (screen.Width - document.body.clientWidth) / 2;
y = (screen.Height - document.body.clientHeight) / 2;
}
window.moveTo(x,y);
}

이 funtion을 팝업 하단에서 호출

<script type="text/javascript">
center()
</script>