function versteckeSubnavi() {
    document.getElementById('pull_down_subnavi').style.display = "none";
}

function zeigeSubnavi() {
    document.getElementById('pull_down_subnavi').style.display = 'block';
}


function highlightTextLink(id) {
    if (id == 'mp') {
        document.getElementById('mainnavi_btn_mp').style.color = '#004287';
        document.getElementById('mainnavi_btn_mp').style.fontWeight = 'bold';
    }
    if (id == 'ic') {
        document.getElementById('mainnavi_btn_ic').style.color = '#99BB1B';
        document.getElementById('mainnavi_btn_ic').style.fontWeight = 'bold';
    }
    if (id == 'ms') {
        document.getElementById('mainnavi_btn_ms').style.color = '#006FBB';
        document.getElementById('mainnavi_btn_ms').style.fontWeight = 'bold';
    }
}

function unHighlightTextLink(id) {
    if (id == 'mp') {
        document.getElementById('mainnavi_btn_mp').style.color = '';
        document.getElementById('mainnavi_btn_mp').style.fontWeight = '';
    }
    if (id == 'ic') {
        document.getElementById('mainnavi_btn_ic').style.color = '';
        document.getElementById('mainnavi_btn_ic').style.fontWeight = '';
    }
    if (id == 'ms') {
        document.getElementById('mainnavi_btn_ms').style.color = '';
        document.getElementById('mainnavi_btn_ms').style.fontWeight = '';
    }
}

function highlightImageLink(id) {
    if (id == 'mp') {
        document.getElementById('btn_multiphone').style.backgroundImage = 'url(images/btn_multiphone_main_hov.jpg)';
    }
    if (id == 'ic') {
        document.getElementById('btn_immocall').style.backgroundImage = 'url(images/btn_immocall_main_hov.jpg)';
    }
    if (id == 'ms') {
        document.getElementById('btn_medisek').style.backgroundImage = 'url(images/btn_medisek_main_hov.jpg)';
    }
}

function unHighlightImageLink(id) {
    if (id == 'mp') {
        document.getElementById('btn_multiphone').style.backgroundImage = '';
    }
    if (id == 'ic') {
        document.getElementById('btn_immocall').style.backgroundImage = '';
    }
    if (id == 'ms') {
        document.getElementById('btn_medisek').style.backgroundImage = '';
    }
}