<!--
img_3 = new Array();
for (i = 0; i <= 3; i++) {
       img_3[i] = new Image() ;
       img_3[i].src = "./images/button/button_on_" + i + ".gif";
    }

    function image_3_On(n) {
        i = n - 29;
        document.images['menu'+n].src = img_3[i].src;
    }

    function image_3_Off(n) {
        i = n - 29;
        document.images['menu'+n].src = "./images/button/button_off_" + i + ".gif";
    }
//-->