open window center

on (release) {
getURL ("java script:NewWindow=window.open('ShowPopup.php','newWin','width=400,height=300,left="+((screen.height-window_height)/2)+",top="+((screen.width-window_width)/2)+",
toolbar=No,location=No,scrollbars=No,status=No,resizable=No,fullscreen=No');  NewWindow.focus();
void(0);");
}

Sådan vil jeg mene...

//>Rune

brug denne: http://www.flash-db.com/PopUp/