function checkBrowser()
{
    // false
    // Neznamy prohlizec
    // Netscape (do 2.0) a Internet Explorer (do 3.0)

    // true
    // Netscape 3.0 a vyssi
    // Internet Explorer 4.0 a vyssi
    // Opera

    // Opera - pojede i kdyz mozna problemy. Mozna vyhledove povolit pro vše.
    if ( navigator.appName == "Opera" )
    {
        return true;
    }



    // Netscape 3.0 a vyssi
    if ( navigator.appName == "Netscape" && parseInt( navigator.appVersion) >= 3)
    {
        return true;
    }

    // Internet Explorer 4.0 a vyssi
    if ( navigator.appName == "Microsoft Internet Explorer")
    {
                var sVersion;
                var nVersion;
                var nIndex;

                sVersion = new String( navigator.appVersion);
                sVersion = sVersion.substring( sVersion.indexOf( "MSIE") + 5);
                nVersion = parseInt( sVersion);

                if ( nVersion >= 4)
                        return true;
    }

    // Neznamy prohlizec 
    return false;
}

// Zobrazeni obrazku ve zvlastnim okne
function view( image, width, height)
{
    if ( checkBrowser())
    {
       nahoda="a" + Math.random()
       woknous="w" + nahoda.substr(3, 7);
	width2=width +24;
	height2=height +24;
        var imgWindow = window.open( "", woknous, "menubar=no,scrollbars=no,resizeable=no,width=" + width2 + ",height=" + height2+",top=0,left=0");
        var imgDoc = imgWindow.document;
        imgDoc.clear();
        imgDoc.open();
        imgDoc.writeln("<HTML>");
        imgDoc.writeln("<HEAD>");
        imgDoc.writeln("<TITLE>", "FOTO-" +document.title, "</TITLE>");
        imgDoc.writeln("</HEAD>");
        imgDoc.writeln("<BODY TOPMARGIN='10' LEFTMARGIN='10' MARGINHEIGHT='10' MARGINWIDTH='10' bgcolor='#006699'>");

        imgDoc.writeln("<a href='javascript:window.close()'>");
        imgDoc.writeln("<IMG SRC='", image, "' BORDER=2></a>");
        imgDoc.writeln("</BODY>");
        imgDoc.writeln("</HTML>");
        imgDoc.close();
    }
}

