function HideOrShowFont(obj) {
    if (obj == "a1") {
        document.getElementById("a1").style.color = "#bbffaa";
        document.getElementById("a2").style.color = "#333";
        document.getElementById("a3").style.color = "#333";
        document.getElementById("a4").style.color = "#333";
        document.getElementById("a5").style.color = "#333";
        document.getElementById("a6").style.color = "#333";
    }

    else if (obj == 'a2') {
        document.getElementById("a1").style.color = "#333";
        document.getElementById("a2").style.color = "#bbffaa";
        document.getElementById("a3").style.color = "#333";
        document.getElementById("a4").style.color = "#333";
        document.getElementById("a5").style.color = "#333";
        document.getElementById("a6").style.color = "#333";
    }
    else if (obj == 'a3') {
        document.getElementById("a1").style.color = "#333";
        document.getElementById("a2").style.color = "#333";
        document.getElementById("a3").style.color = "#bbffaa";
        document.getElementById("a4").style.color = "#333";
        document.getElementById("a5").style.color = "#333";
        document.getElementById("a6").style.color = "#333";
    }
    else if (obj == 'a4') {
        document.getElementById("a1").style.color = "#333";
        document.getElementById("a2").style.color = "#333";
        document.getElementById("a3").style.color = "#333";
        document.getElementById("a4").style.color = "#bbffaa";
        document.getElementById("a5").style.color = "#333";
        document.getElementById("a6").style.color = "#333";
    }
    else if (obj == 'a5') {
        document.getElementById("a1").style.color = "#333";
        document.getElementById("a2").style.color = "#333";
        document.getElementById("a3").style.color = "#333";
        document.getElementById("a4").style.color = "#333";
        document.getElementById("a5").style.color = "#bbffaa";
        document.getElementById("a6").style.color = "#333";
    }
    else if (obj == 'a6') {
        document.getElementById("a1").style.color = "#333";
        document.getElementById("a2").style.color = "#333";
        document.getElementById("a3").style.color = "#333";
        document.getElementById("a4").style.color = "#333";
        document.getElementById("a5").style.color = "#333";
        document.getElementById("a6").style.color = "#bbffaa";
    }
}