If nothing else happens in the mouse, why not use css?
#izzy:hover { color: '#FFFFFF'; }
, . , , , . click add click click class, :
$("izzy").observe('click', function() {
$('izzy').addClass('selected');
});
css
#izzy { color: '#666666'; }
#izzy:hover, #izzy.selected { color: '#FFFFFF'; }
, / / - . , .