function OpenWinCenter(PageName, WinName, w, h, scroll)
    {
        var x = (screen.width  - w) / 2;
        var y = (screen.height - h) / 2;

        y -= 20;

        var param = 'height=' + h + ',width=' + w + ',top=' + y + ',left=' + x + ',scrollbars=' + scroll + ',resizable=no,status=no';

        var hwnd  = window.open(PageName, WinName, param);

        if (parseInt(navigator.appVersion) >= 4) {
            hwnd.window.focus();
        }
    }
    
    function OpenWinTop(PageName, WinName, w, h, scroll)
    {
        var param = 'height=' + h + ',width=' + w + ',top=0,left=0,scrollbars=' + scroll + ',resizable=no,status=no';

        var hwnd  = window.open(PageName, WinName, param);

        if (parseInt(navigator.appVersion) >= 4) {
            hwnd.window.focus();
        }
    }

    function OpenWinFull(PageName, WinName)
    {
        var w = screen.width - 30;
        var h = screen.height - 200;

        var hwnd  = window.open(PageName, WinName, 'toolbar=no,status=yes,scrollbars=yes,location=no,menubar=no,directories=no,resizable=no,width=' + w + ',height=' + h + ',top=0,left=0');

        if (parseInt(navigator.appVersion) >= 4) {
            hwnd.window.focus();
        }
    }