<!--
	function isEspace (c)
	{   return ( c==" " ) ;
	}
	
	function isLetter (c)
	{   return ( ((c >= "a") && (c <= "z")) || ((c >= "A") && (c <= "Z")) ) ;
	}
	
	function isDigit (c)
	{   return ((c >= "0") && (c <= "9")) ;
	}
	
	// on retire de la chaîne passée en paramètre tous les caractères autres que des lettres et espaces.
	function ToAlphabetic (s)
	{   var i, vs_resultat = "", vs_espace="";

		// Search through string's characters one by one
	   for (i = 0; i < s.length; i++)
	   {   
			// Check that current character is letter.
			var c = s.charAt(i);
			if ( (isEspace(c)) && (vs_resultat.length>0))
				vs_espace = " " ;
			
			if (isLetter(c) || isDigit(c) || (c == '-') || (c == "'")  || (c == "&"))
			{
				vs_resultat = vs_resultat + vs_espace + c ;
				vs_espace = "" ;
			}
		}
		
	    // All characters are letters.
	    return vs_resultat ;
	}
//-->