<form method="POST" action="--WEBBOT-SELF--">
<p><input type="checkbox" name="C1" value="ON" checked onclick="D1.style.display=(this.checked)?'':'none'"><select size="1" name="D1">
<option value="aaa">aaa</option>
</select></p>
</form>
<p><input type="checkbox" name="C1" value="ON" checked onclick="D1.style.display=(this.checked)?'':'none'"><select size="1" name="D1">
<option value="aaa">aaa</option>
</select></p>
</form>
<SELECT id="droplist" style="DISPLAY: none; Z-INDEX: 102; LEFT: 112px; WIDTH: 88px; POSITION: absolute; TOP: 192px; HEIGHT: 24px">
<OPTION selected></OPTION>
</SELECT>
<script language="javascript">
function display()
{
if(document.getElementById("mycheckbox").checked == true)
{
document.getElementById("droplist").style.display="";
}
else
{
document.getElementById("droplist").style.display="none";
}
}
</script>