function bbcode(v)
         {
         if (document.selection) // fuer IE
           {
            var str = document.selection.createRange().text;
            document.forms['form_id'].elements['textarea_nachricht'].focus();
            var sel = document.selection.createRange();
            sel.text = "[" + v + "]" + str + "[/" + v + "]";
            return;
           }
          else if ((typeof document.forms['form_id'].elements['textarea_nachricht'].selectionStart) != 'undefined') // fuer Mozilla
           {
            var txtarea = document.forms['form_id'].elements['textarea_nachricht'];
            var selLength = txtarea.textLength;
            var selStart = txtarea.selectionStart;
            var selEnd = txtarea.selectionEnd;
            var oldScrollTop = txtarea.scrollTop;
            //if (selEnd == 1 || selEnd == 2)
            //selEnd = selLength;
            var s1 = (txtarea.value).substring(0,selStart);
            var s2 = (txtarea.value).substring(selStart, selEnd)
            var s3 = (txtarea.value).substring(selEnd, selLength);
            txtarea.value = s1 + '[' + v + ']' + s2 + '[/' + v + ']' + s3;
            txtarea.selectionStart = s1.length;
            txtarea.selectionEnd = s1.length + 5 + s2.length + v.length * 2;
            txtarea.scrollTop = oldScrollTop;
            txtarea.focus();
            return;
           }
          else insert('[' + v + '][/' + v + '] ');
         }

        function insert(what)
         {
          if (document.forms['form_id'].elements['textarea_nachricht'].createTextRange)
           {
            document.forms['form_id'].elements['textarea_nachricht'].focus();
            document.selection.createRange().duplicate().text = what;
           }
          else if ((typeof document.forms['form_id'].elements['textarea_nachricht'].selectionStart) != 'undefined') // fuer Mozilla
           {
            var tarea = document.forms['form_id'].elements['textarea_nachricht'];
            var selEnd = tarea.selectionEnd;
            var txtLen = tarea.value.length;
            var txtbefore = tarea.value.substring(0,selEnd);
            var txtafter =  tarea.value.substring(selEnd, txtLen);
            var oldScrollTop = tarea.scrollTop;
            tarea.value = txtbefore + what + txtafter;
            tarea.selectionStart = txtbefore.length + what.length;
            tarea.selectionEnd = txtbefore.length + what.length;
            tarea.scrollTop = oldScrollTop;
            tarea.focus();
           }
          else
           {
            document.forms['form_id'].elements['textarea_nachricht'].value += what;
            document.forms['form_id'].elements['textarea_nachricht'].focus();
           }
         }