function NewWindow(mypage, myname, w, h, scroll, toolb, menu, resize, stat, locate) {

    self.name = "main"; 

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

}