function clear() {
  location.replace('atleti.asp');
}

function searchAthletes() {

  sSociety = document.forms[0].elements['societa'].value;
  iCategory = document.forms[0].elements['categoria'].value;
  sGender = document.forms[0].elements['genere'].value;
  

  sLink = '';

  if (sSociety != '') sLink += '&soc=' + sSociety;
  if (iCategory != '') sLink += '&cat=' + iCategory;
  if (sGender != '') sLink += '&gen=' + sGender;
 

  if (sLink != '') sLink = '?' + sLink.substring(1, sLink.length);

  location.replace('atleti.asp' + sLink);
}