function popup(w,h,theURL) {

    var centerX = 10;
    var centerY = 10;

        windowprops = "menubar=no,titlebar=no,status=no,top=" + centerY + ",left=" + centerX + ",resizable=no,scrollbar=yes" + ",width="+w+",height="+h;

        window.open(theURL, "Details", windowprops);
}