... così, ad occhio:
Ciao !codice:function controlla(f){ if (f.checked) { (document.getElementById("rag_soc2").style.visibility = "visible") (document.getElementById("txt_rag_soc2").style.visibility = "visible") (document.getElementById("pivacf2").style.visibility = "visible") } else { (document.getElementById("rag_soc2").style.visibility = "hidden") (document.getElementById("txt_rag_soc2").style.visibility = "hidden") (document.getElementById("pivacf2").style.visibility = "hidden") } }![]()