This is tic tac toe.  I will be O's and you will be X's.  It is your turn.<br>

<form action="./tictactoe.php" method="post" name="tttform">
<input type="hidden" name="hul" value="">
<input type="hidden" name="hum" value="">
<input type="hidden" name="hur" value="">
<input type="hidden" name="hml" value="">
<input type="hidden" name="hmm" value="">
<input type="hidden" name="hmr" value="O">
<input type="hidden" name="hll" value="">
<input type="hidden" name="hlm" value="">
<input type="hidden" name="hlr" value="">
<input type="hidden" name="gameover">
<input type="hidden" name="clear">
<table border=1>
<tr>
<td><input type="button" name="ul" value="" onclick="javascript: if(this.value=='X'||this.value=='O') alert('This square is already taken'); else {document.forms[0].elements[0].value='X';document.tttform.submit();}"></td>
<td><input type="button" name="um" value="" onclick="javascript: if(this.value=='X'||this.value=='O') alert('This square is already taken'); else {document.forms[0].elements[1].value='X';document.tttform.submit();}"></td>
<td><input type="button" name="ur" value="" onclick="javascript: if(this.value=='X'||this.value=='O') alert('This square is already taken'); else {document.forms[0].elements[2].value='X';document.tttform.submit();}"></td>
</tr>
<tr>
<td><input type="button" name="ml" value="" onclick="javascript: if(this.value=='X'||this.value=='O') alert('This square is already taken'); else {document.forms[0].elements[3].value='X';document.tttform.submit();}"></td>
<td><input type="button" name="mm" value="" onclick="javascript: if(this.value=='X'||this.value=='O') alert('This square is already taken'); else {document.forms[0].elements[4].value='X';document.tttform.submit();}"></td>
<td><input type="button" name="mr" value="O" onclick="javascript: if(this.value=='X'||this.value=='O') alert('This square is already taken'); else {document.forms[0].elements[5].value='X';document.tttform.submit();}"></td>
</tr>
<tr>
<td><input type="button" name="ll" value="" onclick="javascript: if(this.value=='X'||this.value=='O') alert('This square is already taken'); else {document.forms[0].elements[6].value='X';document.tttform.submit();}"></td>
<td><input type="button" name="lm" value="" onclick="javascript: if(this.value=='X'||this.value=='O') alert('This square is already taken'); else {document.forms[0].elements[7].value='X';document.tttform.submit();}"></td>
<td><input type="button" name="lr" value="" onclick="javascript: if(this.value=='X'||this.value=='O') alert('This square is already taken'); else {document.forms[0].elements[8].value='X';document.tttform.submit();}"></td>
</tr>
</table>
<br><br>
<input type="button" name="newgame" value="CLEAR/NEW GAME" onclick="javascript: document.forms[0].elements[10].value='clear';document.tttform.submit();">
</form>