function getBrowser(){
    //inspiracia http://www.javascriptkit.com/javatutors/navigator.shtml
    if (/MSIE (\d+\.\d+);/.test(navigator.userAgent)){ //test for MSIE x.x;
        if (myVersion>=8){
        //  document.write("You're using IE8 or above")
        }else if (myVersion>=7){
        //  document.write("You're using IE7.x");
        }else if (myVersion>=6){
        //  document.write("You're using IE6.x");
        }else if (myVersion>=5){
        //  document.write("You're using IE5.x");
        }else{
        //  document.write("You're using IE5.x");
        }
        myBroName = 'IE';
    }else if (/Firefox[\/\s](\d+\.\d+)/.test(navigator.userAgent)){ //test for Firefox/x.x or Firefox x.x (ignoring remaining digits);
        if (myVersion>=3){
        //  document.write("You're using FF 3.x or above")
        }else if (myVersion>=2){
        //  document.write("You're using FF 2.x")
        }else if (myVersion>=1){
        //  document.write("You're using FF 1.x");
        }else{

        }
        myBroName = 'FF';
    }else if (/Opera[\/\s](\d+\.\d+)/.test(navigator.userAgent)){ //test for Opera/x.x or Opera x.x (ignoring remaining decimal places);
        if (myVersion>=10){
        //  document.write("You're using Opera 10.x or above")
        }else if (myVersion>=9){
        //  document.write("You're using Opera 9.x")
        }else if (myVersion>=8){
        //  document.write("You're using Opera 8.x")
        }else if (myVersion>=7){
        //  document.write("You're using Opera 7.x")
        }else{
        //  document.write("n/a")
        }
        myBroName = 'OP';
    }else if (/Chrome[\/\s](\d+\.\d+)/.test(navigator.userAgent)){ //test for Opera/x.x or Opera x.x (ignoring remaining decimal places);                    var chrversion=new Number(RegExp.$1) // capture x.x portion and store as a number
        //  document.write('Chrome moje' + navigator.userAgent + ' ||| ' + chrversion);
        myBroName = 'CH';
    }else if (/Safari[\/\s](\d+\.\d+)/.test(navigator.userAgent)){ //test for Opera/x.x or Opera x.x (ignoring remaining decimal places);
        myBroName = 'SA';
    }else{
        myBroName = 'NA';
    //  document.write(navigator.userAgent);
    }
    var myVersion=new Number(RegExp.$1) // capture x.x portion and store as a number
    if (myVersion < 1){
        var myVersion = 0;
    }

    fok = new Object;
    fok.myBroName = myBroName.toLowerCase();
    fok.myVersion = myVersion;
    fok.myVersionFloor = Math.floor(fok.myVersion);
    return fok;

}

function getCSSByBrowser(){
    getBrowser();

    if( fok.myBroName == 'FF' ){
        document.getElementById('foo').innerHTML = 'name '    + fok.myBroName;
    }

    var fileref  = document.createElement("link");
    var filename = 'css/'+ fok.myBroName +'.css';

    fileref.setAttribute("rel", "stylesheet");
    fileref.setAttribute("type", "text/css");
    fileref.setAttribute("href", filename);

    if (typeof fileref!="undefined"){
        document.getElementsByTagName("head")[0].appendChild(fileref);
    }
}