[bes]

<div id="myDiv">
<form>
  <select>
    <option>100</option>				   
    <option>200</option>				   
    <option>300</option>				   			   
  </select>									   
<b></b>							   
</form>

<form>
  <select>
    <option>100</option>				   
    <option>200</option>				   
    <option>300</option>				   			   
  </select>
<b></b>							   
</form>
</div>

<script>
myDiv.onchange = function (event) {
  event = event || window.event;
  var target = event.target || event.srcElement;

  target.parentNode.children[1].innerHTML = target.selectedIndex + 1;
}
</script>