javascript 팝업 가운데 띄우는 스크립트 함수

<script>

function PopCenterOpen(url, name, width, height, scroll){

var x_pos = (screen.availWidth - width) / 2;

var y_pos = (screen.availHeight - height) / 2;

window.open(url, name, 'width=' + width + ', height=' + height + ', left=' + x_pos + ', top=' + y_pos + ', scrollbars=' + scroll);

}

PopCenterOpen('http://doonee.tistory.com', '두니의일상팝업', 600, 400, 'yes');

</script>