function menuSwap(arg_con) {
        var img_con = document.getElementById(arg_con);
        var img_src = img_con.src;

        if (img_src.indexOf("_off.png") != -1)
            {img_con.src = img_src.replace("_off.png", "_on.png");}

            if (img_src.indexOf("_on.png") != -1)
            { img_con.src = img_src.replace("_on.png", "_off.png"); }

    }


    function hide_seca() {
        var seca_popup = document.getElementById('seca_popup');
        seca_popup.style.display = 'none';
    }

    function show_seca() {
        var seca_popup = document.getElementById('seca_popup');
        seca_popup.style.display = 'block';
    }