title_on = new Image(159,49);
title_on.src="http://ambientwhimsy.com/awlight.gif";
title_off = new Image(159,49);
title_off.src="http://ambientwhimsy.com/awdark.gif";

about_on = new Image(32,16);
about_on.src="http://ambientwhimsy.com/aboutlight.gif";
about_off = new Image(32,16);
about_off.src="http://ambientwhimsy.com/aboutdark.gif";

archive_on = new Image(40,16);
archive_on.src="http://ambientwhimsy.com/archivelight.gif";
archive_off = new Image(40,16);
archive_off.src="http://ambientwhimsy.com/archivedark.gif";

function over_image(parm_name)
    {
        document[parm_name].src = eval(parm_name + "_on.src");
    }
function off_image(parm_name)
    {
        document[parm_name].src = eval(parm_name + "_off.src");
    }