function addbbcode(code)
{
     var textarea = document.getElementById('mcontent');
     var text1 = '[' + code + ']';
     var text2 = '[/' + code + ']';
     
     if (typeof(textarea.caretPos) != "undefined" && textarea.createTextRange)
     {
     var caretPos = textarea.caretPos, temp_length = caretPos.text.length;
     
     caretPos.text = caretPos.text.charAt(caretPos.text.length - 1) == ' ' ? text1 + caretPos.text + text2 + ' ' : text1 + caretPos.text + text2;
     
     if (temp_length == 0)
     {
     caretPos.moveStart("character", -text2.length);
     caretPos.moveEnd("character", -text2.length);
     caretPos.select();
     }
     else
     textarea.focus(caretPos);
     }
     // Mozilla text range wrap.
     else if (typeof(textarea.selectionStart) != "undefined")
     {
     var begin = textarea.value.substr(0, textarea.selectionStart);
     var selection = textarea.value.substr(textarea.selectionStart, textarea.selectionEnd - textarea.selectionStart);
     var end = textarea.value.substr(textarea.selectionEnd);
     var newCursorPos = textarea.selectionStart;
     var scrollPos = textarea.scrollTop;
     
     textarea.value = begin + text1 + selection + text2 + end;
     
     if (textarea.setSelectionRange)
     {
     if (selection.length == 0)
     textarea.setSelectionRange(newCursorPos + text1.length, newCursorPos + text1.length);
     else
     textarea.setSelectionRange(newCursorPos, newCursorPos + text1.length + selection.length + text2.length);
     textarea.focus();
     }
     textarea.scrollTop = scrollPos;
     }
     // Just put them on the end, then.
     else
     {
     textarea.value += text1 + text2;
     textarea.focus(textarea.value.length - 1);
     }

  return true;
}