function generateBG (bg_num) {
    if( typeof( window.innerWidth ) == 'number' ) {
        //Non-IE
        myWidth = window.innerWidth;
        myHeight = window.innerHeight;
    } else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
        //IE 6+ in 'standards compliant mode'
        myWidth = document.documentElement.clientWidth;
        myHeight = document.documentElement.clientHeight;
    } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
        //IE 4 compatible
        myWidth = document.body.clientWidth;
        myHeight = document.body.clientHeight;
    }

    return '<img src="/resizer_bg.php?imgfile=bg/bg' + bg_num + '.jpg&newsize=' + myHeight + '" alt="bg">';
}

function setTopBG (div,bg_num) {
    var d = document.getElementById(div);
    d.style.background = "url('/bg/bg_top_" + bg_num + ".jpg') repeat-x";
}

function gooleAnalytics () {
    var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www.");
    document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E"));
    try {
        var pageTracker = _gat._getTracker("UA-11723791-1");
        pageTracker._setDomainName(".pruzkumnici.cz");
        pageTracker._trackPageview();
    } catch(err) {}
}

function TOPlist () {
    document.write ('<img src="http://toplist.cz/count.asp?id=312397&amp;logo=mc&amp;start=1000&amp;http='+escape(document.referrer)+'&amp;t='+escape(document.title)+'" width="88" height="60" alt="TOPlist" />');
}