<tr><td class="inhoud" colspan="3" align="center">
function ubb(begin, eind) {
  var tekst = window.promt code('[code=php]','[/codee]\n');


<input value="Dikgedrukt" onclick="code('[b]','[/b]\n')" type="button">
<input value="Schuingedrukt" onclick="code('[i]','[/i]\n')" type="button">
<input value="Onderstreept" onclick="code('[u]','[/u]')" type="button"><br>
<input value="Doorstreept" onclick="code('[s]','[/s]\n')" type="button">
<input value="Centreren" onclick="code('[center]','[/center]\n')" type="button">
<input value="Links" onclick="code('[left]','[/left]\n')" type="button">
<input value="Plaatje" onclick="code('[img]','[/img]\n')" type="button">
</td></tr>
<tr><td class="inhoud" colspan="3" align="center">
 var result = begin + tekst + eind;
}