function marksVisible() {
    o1 = document.getElementById('MainSearchTabSize_a');
    o1.className = 'Cur2';
    o2 = document.getElementById('MainSearchTabMark_a');
    o2.className = 'Cur2';

    o3 = document.getElementById('marksBox');
    o3.className = 'MainSearchMarkContentBox';
    o4 = document.getElementById('dimsBox');
    o4.className = 'MainSearchSizeContentBox-hide';
}

function dimsVisible() {
    o1 = document.getElementById('MainSearchTabSize_a');
    o1.className = 'Cur1';
    o2 = document.getElementById('MainSearchTabMark_a');
    o2.className = 'Cur1';

    o3 = document.getElementById('marksBox');
    o3.className = 'MainSearchMarkContentBox-hide';
    o4 = document.getElementById('dimsBox');
    o4.className = 'MainSearchSizeContentBox';
}