function tuxcode(code)
{
   var debut = '<'+code+'>';
   var fin = '</'+code+'>';
   if(code=='lien:http://')
   {
	   var fin = '</lien>';
   }
   if(code=='link:http://') 
   {
	   var fin = '</link>';
   }
   var input = document.getElementById('contenu');
   input.focus();
   /* réglages IE*/
   if(typeof document.selection != 'undefined')
   {
      var range = document.selection.createRange();
      var insText = range.text;
      range.text = debut + insText + fin;
      range = document.selection.createRange();
      if (insText.length == 0)
      {
        range.move('character', -fin.length);
      }
      else
      {
         range.moveStart('character', debut.length + insText.length + fin.length);
      }
      range.select();
   }
   /*réglages autres naigateurs  */
   else if(typeof input.selectionStart != 'undefined')
   { 
      var start = input.selectionStart;
      var end = input.selectionEnd;
      var insText = input.value.substring(start, end);
      input.value = input.value.substr(0, start) + debut + insText + fin + input.value.substr(end);
      var pos;
      if (insText.length == 0)
      {
         pos = start + debut.length;
      }
      else
      {
         pos = start + debut.length + insText.length + fin.length;
      }
      input.selectionStart = pos;
      input.selectionEnd = pos;
   }
   /* pour les autres navigateurs comme Netscape... */
   else
   {
      var pos;
      var re = new RegExp('^[0-9]{0,3}$');
      while(!re.test(pos))
      {
         pos = prompt("insertion (0.." + input.value.length + "):", "0");
      }
      if(pos > input.value.length)
      {
         pos = input.value.length;
      }
      var insText = prompt("Veuillez taper le texte");
      input.value = input.value.substr(0, pos) + debut + insText + fin + input.value.substr(pos);
   }
}

function tuxsmiley(smiley)
{
	document.getElementById('contenu').value+=' '+smiley+'';
}