Enable/Disable Drop Down on Selection HELP..

I personally have no javascript experience what so ever. I'm just looking for someone who can write the code for me for free.

Example:

<form id="form1" name="form1" method="post" action="">

<option value="US" selected="selected">United States</option>
<option value="AU">Australia</option>
<option value="CA">Canada</option>
<option value="GB">United Kingdom</option>
<option value="B"></option>

<option value="AF">Afghanistan</option>
<option value="AL">Albania</option>
<option value="DZ">Algeria</option>

<select name="states" class="select">
<option value="AL">Alabama</option>
<option value="AK">Alaska</option>
<option value="AZ">Arizona</option>

<option value="AR">Arkansas</option>
<option value="AA">Armed Forces Americas</option>
<option value="AE">Armed Forces Europe</option>
<option value="AP">Armed Forces Pacific</option>
<option value="CA">California</option>
<option value="CO">Colorado</option>
<option value="CT">Connecticut</option>
<option value="DE">Delaware</option>

</form>

HTML:

I want the "states" drop down disabled unless the value "US" is selected on the "country" drop down.

 

this should work, though it wasn't tested:

<script type="text/javascript">
function enableStates(to_enable)
{
  var statesSelectObj = document.getElementById('states_select');
  if (statesSelectObj)
  {
    if (to_enable)
    {
      statesSelectObj.removeAttribute('disabled');
    }
    else
    {
      statesSelectObj.setAttribute('disabled', 'disabled');
    }
  }
}
</script>
<form id="form1" name="form1" method="post" action="">

<!-- you forgot to put this select tag... -->
<select name="country_select" onchange="enableStates(this.options[this.selectedIndex].value == 'US');">[/B]

<option value="US" selected="selected">United States</option>
<option value="AU">Australia</option>
<option value="CA">Canada</option>
<option value="GB">United Kingdom</option>
<option value="B"></option>

<option value="AF">Afghanistan</option>
<option value="AL">Albania</option>
<option value="DZ">Algeria</option>

<!-- and end select tag -->
</select>

<select name="states" class="select" id="states_select">
<option value="AL">Alabama</option>
<option value="AK">Alaska</option>
<option value="AZ">Arizona</option>

<option value="AR">Arkansas</option>
<option value="AA">Armed Forces Americas</option>
<option value="AE">Armed Forces Europe</option>
<option value="AP">Armed Forces Pacific</option>
<option value="CA">California</option>
<option value="CO">Colorado</option>
<option value="CT">Connecticut</option>
<option value="DE">Delaware</option>

</form>

HTML:

 

Work's perfect I thank you.