<html:select name="list" onchange="DoSome();">

<script type="text/javascript"><!--
function doSelect(id) {
  alert("id.value=" + id.value); 
}
//-->
</script>
<html:select name="myForm" property="myProperty" onchange="doSelect(this);">
  <html:option value="Single 0">Single  0 </html:option>
  <html:option value="Single 1">Single  1 </html:option>
  <html:option value="Single 2">Single  2 </html:option>
  <html:option value="Single 3">Single  3 </html:option>
  <html:option value="Single 4">Single  4 </html:option>
  <html:option value="Single 5">Single  5 </html:option>
  <html:option value="Single 6">Single  6 </html:option>
  <html:option value="Single 7">Single  7 </html:option>
  <html:option value="Single 8">Single  8 </html:option>
  <html:option value="Single 9">Single  9 </html:option>
</html:select>