function rollon(id)
{
    if(id == 'menu1')
        document.getElementById('menu1').src = 'http://www.lereve-de-laborigene.net/Themes/Default/Images/MP/menu1on.jpg';

    if(id == 'menu2')
        document.getElementById('menu2').src = 'http://www.lereve-de-laborigene.net/Themes/Default/Images/MP/menu2on.jpg';

    if(id == 'menu3')
        document.getElementById('menu3').src = 'http://www.lereve-de-laborigene.net/Themes/Default/Images/MP/menu3on.jpg';

    if(id == 'menu4')
        document.getElementById('menu4').src = 'http://www.lereve-de-laborigene.net/Themes/Default/Images/MP/menu4on.jpg';

    if(id == 'menu5')
        document.getElementById('menu5').src = 'http://www.lereve-de-laborigene.net/Themes/Default/Images/MP/menu5on.jpg';

    if(id == 'menu6')
        document.getElementById('menu6').src = 'http://www.lereve-de-laborigene.net/Themes/Default/Images/MP/menu6on.jpg';

    if(id == 'menu7')
        document.getElementById('menu7').src = 'http://www.lereve-de-laborigene.net/Themes/Default/Images/MP/menu7on.jpg';

    if(id == 'menu8')
        document.getElementById('menu8').src = 'http://www.lereve-de-laborigene.net/Themes/Default/Images/MP/menu8on.jpg';

    if(id == 'menu9')
        document.getElementById('menu9').src = 'http://www.lereve-de-laborigene.net/Themes/Default/Images/MP/menu9on.jpg';

}            
function rollout(id)
{
    if(id == 'menu1')
        document.getElementById('menu1').src = 'http://www.lereve-de-laborigene.net/Themes/Default/Images/MP/menu1off.jpg';

    if(id == 'menu2')
        document.getElementById('menu2').src = 'http://www.lereve-de-laborigene.net/Themes/Default/Images/MP/menu2off.jpg';

    if(id == 'menu3')
        document.getElementById('menu3').src = 'http://www.lereve-de-laborigene.net/Themes/Default/Images/MP/menu3off.jpg';

    if(id == 'menu4')
        document.getElementById('menu4').src = 'http://www.lereve-de-laborigene.net/Themes/Default/Images/MP/menu4off.jpg';

    if(id == 'menu5')
        document.getElementById('menu5').src = 'http://www.lereve-de-laborigene.net/Themes/Default/Images/MP/menu5off.jpg';

    if(id == 'menu6')
        document.getElementById('menu6').src = 'http://www.lereve-de-laborigene.net/Themes/Default/Images/MP/menu6off.jpg';

    if(id == 'menu7')
        document.getElementById('menu7').src = 'http://www.lereve-de-laborigene.net/Themes/Default/Images/MP/menu7off.jpg';

    if(id == 'menu8')
        document.getElementById('menu8').src = 'http://www.lereve-de-laborigene.net/Themes/Default/Images/MP/menu8off.jpg';

    if(id == 'menu9')
        document.getElementById('menu9').src = 'http://www.lereve-de-laborigene.net/Themes/Default/Images/MP/menu9off.jpg';

}