function ImpostaStile(){
 
 // EXPLORER --------------------------------

 if(document.all){
   document.write(
    '<style>' +
       'div {font-size:0.8em;font-family: Arial, Verdana, Helvetica, sans-serif;}' +
       'h3 {font-size:2.5em; font-weight:100; text-align:center; margin-bottom:1.8em; margin-top:1.5em}'+
       'h4 {font-size:1.3em; margin-top:1.5em}'+
       'li {margin-top:0.5em; list-style-image: url(./images/q_puntoelenco.gif)}' +
       'ul ul li {margin-top:0em; margin-left:-1em; list-style-image: url(./images/disk_puntoelenco.gif)}' +
       'table {font-size:1em;font-family: Arial, Verdana, Helvetica, sans-serif;}' +
       'table.avvisi td {font-size:0.9 em; font-weight:400; vertical-align:top;}' +
       'div.fondopagina {font-size:0.7em;}' +
    '</style>');
 }

 // NETSCAPE --------------------------------

 else{
   document.write(
    '<style>' +
       'div {font-size:10pt;font-family: Arial, Verdana, Helvetica, sans-serif;}' +
       'h3 {font-size:24pt; font-weight:100; text-align:center; margin-bottom:40pt; margin-top:45pt}'+
       'h4 {font-size:12pt;}'+
       'li {margin-top:8pt;list-style-image: url(./images/q_puntoelenco.gif)}' +
       'ul ul li {margin-top:2pt;list-style-image: url(./images/disk_puntoelenco.gif)}' +
       'td {font-size:10pt;font-family: Arial, Verdana, Helvetica, sans-serif;vertical-align:top;}' +
       'div.fondopagina {font-size:8pt;}' +
    '</style>');
 }

}