function toggleDrawer(obj, obj2) {
    var el = document.getElementById(obj);
    var il = document.getElementById(obj2);
    if ( el.style.display != "none" ) {
	el.style.display = 'none';
	il.src = "/images/arrow_right.png";
    }
    else {
	el.style.display = '';
	il.src = "/images/arrow_down.png";
    }
}
function toggleColour(obj, obj2) {
    var iel = document.getElementById(obj);
    var cel = document.getElementById(obj2);

    var ibb = document.getElementById('img_R');
    var irr = document.getElementById('img_BC');
    var ibl = document.getElementById('img_B');

    ibb.style.display = 'none';
    irr.style.display = 'none';
    ibl.style.display = 'none';
    iel.style.display = '';

    var cbb = document.getElementById('cc_R');
    var crr = document.getElementById('cc_BC');
    var cbl = document.getElementById('cc_B');

    cbb.style.fontWeight = '';
    crr.style.fontWeight = '';
    cbl.style.fontWeight = '';

    cel.style.fontWeight = 'bold';
}