function ChangeOnglet(onglet, contenu) {   
    document.getElementById('topSons').style.display = 'none';
    document.getElementById('lastSons').style.display = 'none';
    document.getElementById('mostCommentedSons').style.display = 'none';       
    document.getElementById(contenu).style.display = 'block';       

    document.getElementById('tab_1').className = '';
    document.getElementById('tab_2').className = '';
    document.getElementById('tab_3').className = '';       
    document.getElementById(onglet).className = 'active';       
}

function ChangeOngletVideos(onglet, contenu) {   
    document.getElementById('topVideos').style.display = 'none';
    document.getElementById('lastVideos').style.display = 'none';
    document.getElementById('mostCommentedVideos').style.display = 'none';       
    document.getElementById(contenu).style.display = 'block';       

    document.getElementById('tab_4').className = '';
    document.getElementById('tab_5').className = '';
    document.getElementById('tab_6').className = '';       
    document.getElementById(onglet).className = 'active';       
}

function ChangeOngletClips(onglet, contenu) {   
    document.getElementById('topClips').style.display = 'none';
    document.getElementById('lastClips').style.display = 'none';
    document.getElementById('mostCommentedClips').style.display = 'none';       
    document.getElementById(contenu).style.display = 'block';       

    document.getElementById('tab_7').className = '';
    document.getElementById('tab_8').className = '';
    document.getElementById('tab_9').className = '';       
    document.getElementById(onglet).className = 'active';       
}