Ma che devo fare se lo codifico (&amp non mi funziona lo script e se non lo codifico non me lo valida...

Qualcuno ha qualche idea?

-------------lo script-------------
startList = function() {
if (document.all&&document.getElementById) {
-----------------------------------

-------------l'errore--------------
Line 14, column 17: character "&" is the first character of a delimiter but occurred as data

if (document.all&&document.getElementById) {

If you wish to include the "<" character in your output, you should escape it as "&lt;". Another possibility is that you forgot to close quotes in a previous tag.
-----------------------------------