var previsu_auto=0;

function Active_Previsu_Auto(){
  previsu_auto=1;
  Previsualisation();
}
/*
function Verif_Previsu_Auto(){
  if (document.getElementById('previsu_auto').checked){
    previsu_auto=1;
    Previsualisation();
  }
  else previsu_auto=0;
}
*/
function Insert_Code(bbdebut,bbfin){
  var input = window.document.formulaire.textarea;
  input.focus();
  if (typeof document.selection != 'undefined'){
    var range = document.selection.createRange();
    var insText = range.text;
    range.text = bbdebut + insText + bbfin;
    range = document.selection.createRange();
    if (insText.length == 0){
      range.move('character', -bbfin.length);
    }
    else{
      range.moveStart('character', bbdebut.length + insText.length + bbfin.length);
    }
    range.select();
  }
  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) + bbdebut + insText + bbfin + input.value.substr(end);
    var pos;
    if (insText.length == 0){
      pos = start + bbdebut.length;
    }
    else{
      pos = start + bbdebut.length + insText.length + bbfin.length;
    }
    input.selectionStart = pos;
    input.selectionEnd = pos;
  }
  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) + bbdebut + insText + bbfin + input.value.substr(pos);
  }
}

function Previsualisation(){
  var texte=window.document.formulaire.textarea.value;

  texte=texte.replace(/\n/g,'<br />');

  texte=texte.replace(/\[b\](.*?)\[\/b\]/g,'<b>$1</b>');
  texte=texte.replace(/\[i\](.*?)\[\/i\]/g,'<i>$1</i>');
  texte=texte.replace(/\[u\](.*?)\[\/u\]/g,'<u>$1</u>');

  texte=texte.replace(/:\)/g,'<img src="smileys/:).png" alt=":)" />');
  texte=texte.replace(/;\)/g,'<img src="smileys/;).png" alt=";)" />');
  texte=texte.replace(/:D/g,'<img src="smileys/:D.png" alt=":D" />');
  texte=texte.replace(/;D/g,'<img src="smileys/;D.png" alt=";D" />');

  document.getElementById('previsu').innerHTML=texte;

  if (previsu_auto==1) setTimeout(function(){Previsualisation()},100);
}

function Dimention_Edit(mode){
  var rows=document.getElementById('textarea').rows;

  if (mode=='+') rows++;
  else if (mode=='-') rows--;

  document.getElementById('textarea').rows=rows;
  document.getElementById('previsu').style.height=rows*18+'px';
}