var act = '';

function changebtn(divid, state) {
    if (state == 1) pref = '_act'; else pref = '';
    if (act != '' && state == 1) {
        setup(act, '');
    }
    setup(divid, pref);
    if (act != '' && state == 0) {  
        setup(act, '_act'); 
    }        
}

function setup(divid, pref) {
    if (divid == 'm1') {
        m1(pref);
    } else if (divid == 'm2') {
        m2(pref);
    } else if (divid == 'm3') {
        m3(pref);
    } else if (divid == 'm4') {
        m4(pref);
    } else if (divid == 'm5') {
        m5(pref);
    }            
}

function m1(pref) {
    document.getElementById('m1-1').style.backgroundImage='url(images/menu_l1' + pref + '.gif)';
    document.getElementById('m1-2').style.backgroundImage='url(images/menu_bg' + pref + '.gif)';
    document.getElementById('m1-3').style.backgroundImage='url(images/menu_r' + pref + '.gif)';
}

function m2(pref) {
    document.getElementById('m1-3').style.backgroundImage='url(images/menu_r' + pref + '_next.gif)';
    document.getElementById('m2-1').style.backgroundImage='url(images/menu_bg' + pref + '.gif)';
    document.getElementById('m2-2').style.backgroundImage='url(images/menu_r' + pref + '.gif)';        
}

function m3(pref) {
    document.getElementById('m2-2').style.backgroundImage='url(images/menu_r' + pref + '_next.gif)';
    document.getElementById('m3-1').style.backgroundImage='url(images/menu_bg' + pref + '.gif)';
    document.getElementById('m3-2').style.backgroundImage='url(images/menu_r' + pref + '.gif)';        
}

function m4(pref) {
    document.getElementById('m3-2').style.backgroundImage='url(images/menu_r' + pref + '_next.gif)';
    document.getElementById('m4-1').style.backgroundImage='url(images/menu_bg' + pref + '.gif)';
    document.getElementById('m4-2').style.backgroundImage='url(images/menu_r' + pref + '.gif)';        
}

function m5(pref) {
    document.getElementById('m4-2').style.backgroundImage='url(images/menu_r' + pref + '_next.gif)';
    document.getElementById('m5-1').style.backgroundImage='url(images/menu_bg' + pref + '.gif)';
    document.getElementById('m5-2').style.backgroundImage='url(images/menu_r1' + pref + '.gif)';        
}

function goto(href) {
    window.location = href;
}