function bbcode(debut, fin)
{
        var input = window.document.getElementById("poster").message;
        input.focus();
 
        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();
        }
 
        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;
        }
        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 smilies(img)
{
        window.document.getElementById("poster").message.value += '' + img + '';
}