function menu(item) {
    if (document.getElementById('menu-'+item).style.visibility == 'hidden' || document.getElementById('menu-'+item).style.visibility == '') {
        document.getElementById('btn-'+item).style.backgroundPosition = '0 -40px';
        document.getElementById('menu-'+item).style.visibility = 'visible';
    } else {
        if (document.getElementById('btn-'+item).className == 'btn') {
            document.getElementById('btn-'+item).style.backgroundPosition = '0 0';
        }
        document.getElementById('menu-'+item).style.visibility = 'hidden';
    }
}

function switchTheme(value) {
    if (value == 'normal') {
        chooseStyle('none', 60);
        document.getElementById('size-1').className = 'active';
        document.getElementById('size-2').className = '';
    } else if (value == 'big') {
        chooseStyle('themeBig', 60);
        document.getElementById('size-1').className = '';
        document.getElementById('size-2').className = 'active';
    }
}

function openPrint() {
    url = window.location.href;
    tmp = url.split('?');
    url = tmp[0];

    param = 'toolbar=no,location=no,directories=no,status=no,menubar=yes,scrollbars=yes,resizable=no,copyhistory=yes,width=575,height=575,left=100,top=100';
    popup = window.open(url+'?print','foo',param);
    popup.focus();
}