window.addEvent('domready', function(){
$$('div#idmenu span.urimenuno').set('opacity','0.5');
$$('div#idmenu span.urimenu').set('opacity','0.5').addEvents({
mouseenter: function(){
this.morph({
'opacity':'1'
});
},
mouseleave: function(){
this.morph({
'opacity':'0.5'
});
}
});


});