function LTrim(str)
/*
   PURPOSE: Remove leading blanks from our string.
   IN: str - the string we want to LTrim
*/
{
   var whitespace = new String(" \t\n\r");

   var s = new String(str);

   if (whitespace.indexOf(s.charAt(0)) != -1) {
      // We have a string with leading blank(s)...

      var j=0, i = s.length;

      // Iterate from the far left of string until we
      // don't have any more whitespace...
      while (j < i && whitespace.indexOf(s.charAt(j)) != -1)
         j++;

      // Get the substring from the first non-whitespace
      // character to the end of the string...
      s = s.substring(j, i);
   }
   return s;
}

/*
==================================================================
RTrim(string) : Returns a copy of a string without trailing spaces.
==================================================================
*/
function RTrim(str)
/*
   PURPOSE: Remove trailing blanks from our string.
   IN: str - the string we want to RTrim

*/
{
   // We don't want to trip JUST spaces, but also tabs,
   // line feeds, etc.  Add anything else you want to
   // "trim" here in Whitespace
   var whitespace = new String(" \t\n\r");

   var s = new String(str);

   if (whitespace.indexOf(s.charAt(s.length-1)) != -1) {
      // We have a string with trailing blank(s)...

      var i = s.length - 1;       // Get length of string

      // Iterate from the far right of string until we
      // don't have any more whitespace...
      while (i >= 0 && whitespace.indexOf(s.charAt(i)) != -1)
         i--;


      // Get the substring from the front of the string to
      // where the last non-whitespace character is...
      s = s.substring(0, i+1);
   }

   return s;
}

/*
=============================================================
Trim(string) : Returns a copy of a string without leading or trailing spaces
=============================================================
*/
function Trim(str)
/*
   PURPOSE: Remove trailing and leading blanks from our string.
   IN: str - the string we want to Trim

   RETVAL: A Trimmed string!
*/
{
   return RTrim(LTrim(str));
}

    function CheckCorsi(){
    var okay = true;
      if ((Trim(document.commt.nome.value)=='') && (okay == true)){
        alert ('Devi specificare il nome!');
        okay = false;
        document.commt.nome.focus();
      }
      if ((Trim(document.commt.telefono.value)=='') && (okay == true)){
        alert ('Devi specificare il telefono!');
        okay = false;
        document.commt.telefono.focus();
      }
      if ((Trim(document.commt.citta.value)=='') && (okay == true)){
        alert ('Devi specificare la cittą!');
        okay = false;
        document.commt.citta.focus();
      }
	  if ((Trim(document.commt.email.value)=='') && (okay == true)){
        alert ('Devi specificare la mail!');
        okay = false;
        document.commt.email.focus();
      }
	  if ((Trim(document.commt.partecipanti.value)=='') && (okay == true)){
        alert ('Devi specificare quanti partecipanti!');
        okay = false;
        document.commt.partecipanti.focus();
      }	  
	  if (((document.commt.informativaok.value)=='') && (okay == true)){
        alert ('Devi confermare la lettura dell“informativa!');
        okay = false;
        document.commt.informativaok.focus();
	  }
      return okay;
    }