function form_add($arr,$lang2){
	echo "<form action=\"".basename($_SERVER["PHP_SELF"])."\" method=\"post\">\n"
	."<fieldset>\n"
	."<legend>Definizione lingue</legend>"
    ."<input type=\"hidden\" name=\"ed\" value=\"1\" />\n"
    ."<select name=\"lg\">\n";
	foreach($lang2 as $key=>$val)
	{
	  $found=false;
	  for($i=0;$i<count($arr);$i++)
	    if($key == $arr[$i]) 
	    	$found=true;
	  if(!$found)
	    echo "<option value=\"".$key."\">".$val."</option>\n";
	}
    echo "</select>\n"
    ."<label for=\"df\">Lingua predefinita</label><input type=\"checkbox\" name=\"df\" id=\"df\" />\n"
    ."<input type=\"submit\" value=\"Salva\" />\n"
    ."</fieldset>\n"
    ."</form>\n";
}