/* addBBcode */
function addBBcode(form, code)
{
   //=====IE support=====
  if (document.selection) {
    form.focus();
    sel = document.selection.createRange();
    sel.text = code;
  }
  //=====MOZILLA/NETSCAPE/OPERA support=====
  else if (form.selectionStart || form.selectionStart == ‘0′) {
    var startPos = form.selectionStart;
    var endPos = form.selectionEnd;
    form.value = form.value.substring(0, startPos)
      + code
      + form.value.substring(endPos, form.value.length);
  } else {
    form.value += code;
  }
}