Ecco il codice.

<HTML>
<BODY onLoad="document.forms[0].text.focus();">
<DIV align="center">
<FORM action="text.html" method="post">
<TABLE width="40"><TR><TD>
<BUTTON onClick="document.forms[0].text.value=document.forms[0].text.value+' '; document.forms[0].text.focus();">[img]smile.gif[/img]</BUTTON>
<BUTTON onClick="document.forms[0].text.value=document.forms[0].text.value+' '; document.forms[0].text.focus();"></BUTTON></TD>
<TD><BUTTON onClick="document.forms[0].text.value=document.forms[0].text.value+' '; document.forms[0].text.focus();">[img]dho.gif[/img]</BUTTON>
<BUTTON onClick="document.forms[0].text.value=document.forms[0].text.value+' '; document.forms[0].text.focus();">[img]ciao.gif[/img]</BUTTON>
</TD></TR></TABLE>
<TEXTAREA name="text" rows="15" cols="60"></TEXTAREA>
</FORM></DIV></BODY></HTML>

PS Scarica le faccine smile, dhò, big grin, e ciauz dall'editor di FORUM.HTML