function PICwin(URL) { var NAME = "PicturePreview" var WIDTH = 220; var HEIGHT = 180; var hmax = screen.availWidth; var vmax = screen.availHeight; // var TOP = (vmax - HEIGHT) / 2; // var LEFT = (hmax - WIDTH) / 2; var TOP = 100; var LEFT = 100; window.open(URL,NAME,'width='+WIDTH+',height='+HEIGHT+',top='+TOP+',left='+LEFT); }