var MyAdv = Class.create(Adv,{
	getContent: function(adv_spazi_id, mid, domElementId){
		new Ajax.Request(this.url,{
			method:'post',
			parameters: {action:'getContent', adv_spazi_id:adv_spazi_id, mid:mid},
			onSuccess: function(transport) {
				$(domElementId).update(transport.responseText);
			}
		});
	}
});