function bbcode(bbdebut, bbfin)
{
var obj = document.getElementById("chat")
obj.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 obj.selectionStart != 'undefined')
{
var start = obj.selectionStart;
var end = obj.selectionEnd;
var insText = obj.value.substring(start, end);
obj.value = obj.value.substr(0, start) + bbdebut + insText + bbfin + obj.value.substr(end);
var pos;
if (insText.length == 0)
{
pos = start + bbdebut.length;
}
else
{
pos = start + bbdebut.length + insText.length + bbfin.length;
}
obj.selectionStart = pos;
obj.selectionEnd = pos;
}
 
else
{
var pos;
var re = new RegExp('^[0-9]{0,3}$');
while(!re.test(pos))
{
pos = prompt("insertion (0.." + obj.value.length + "):", "0");
}
if(pos > obj.value.length)
{
pos = obj.value.length;
}
var insText = prompt("Veuillez taper le texte");
obj.value = obj.value.substr(0, pos) + bbdebut + insText + bbfin + obj.value.substr(pos);
}
}
function smilies(img)
{
window.document.formulaire.message.value += '' + img + '';
}