function NewWindow(mypage,myname,w,h,scroll){
    var win= null;

    var winl = (screen.width-w)/2;
    var wint = (screen.height-h)/2;
    var settings  = 'height='+h+',';
    settings += 'width='+w+',';
    settings += 'top='+wint+',';
    settings += 'left='+winl+',';
    settings += 'scrollbars='+scroll+',';
    settings += 'resizable=yes';
    window.open(mypage,myname,settings);
}

function popup(mypage, myname, w, h, scroll, resizable, menubar) {
   var winl = (screen.width - w) / 2;
   var wint = (screen.height - h) / 2;
   winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+scroll+',resizable='+resizable+',menubar='+menubar+''
   win = window.open(mypage, myname, winprops)
   if (parseInt(navigator.appVersion) >= 4) win.window.focus();
}