USA Country Dropdown

When USA is selected, it enables the State dropdown

by Brian Duffey

HTML

<select name="BillingCountryCode" size="1" id="BillingCountryCode">
    <option value="4">Afghanistan</option>
    <option value="8">Albania</option>
    <option value="12">Algeria</option>
    <option value="16">American Samoa</option>
    <option value="20">Andorra</option>
    <option value="24">Angola</option>
    <option value="10">Antarctica</option>
    <option value="28">Antigua and Barbuda</option>
    <option value="32">Argentina</option>
    <option value="51">Armenia</option>
    <option value="533">Aruba</option>
    <option value="36">Australia</option>
    <option value="40">Austria</option>
    <option value="31">Azerbaijan Rep.</option>
    <option value="44">Bahamas</option>
    <option value="48">Bahrain</option>
    <option value="50">Bangladesh</option>
    <option value="52">Barbados</option>
    <option value="112">Belarus</option>
    <option value="56">Belgium</option>
    <option value="84">Belize</option>
    <option value="204">Benin</option>
    <option value="60">Bermuda</option>
    <option value="64">Bhutan</option>
    <option value="68">Bolivia</option>
    <option value="70">Bosnia</option>
    <option value="72">Botswana</option>
    <option value="76">Brazil</option>
    <option value="96">Brunei</option>
    <option value="100">Bulgaria</option>
    <option value="854">Burkina Faso</option>
    <option value="108">Burundi</option>
    <option value="116">Cambodia</option>
    <option value="120">Cameroon</option>
    <option value="124">Canada</option>
    <option value="132">Cape Verde Islands</option>
    <option value="136">Cayman Islands</option>
    <option value="140">Central African Republic</option>
    <option value="148">Chad</option>
    <option value="152">Chile</option>
    <option value="156">China People's Republic</option>
    <option value="170">Columbia</option>
    <option value="174">Comoros</option>
    <option value="178">Congo</option>
    <option value="184">Cook Islands</option>
    <option...

JavaScript

jQuery(function () {
    jQuery('#BillingCountryCode').change(function () {
        if (jQuery(this).val() !== '840') {
            jQuery('.USStates').attr('disabled', 'disabled').removeAttr('id').hide();
            jQuery('.OtherState').removeAttr('disabled').attr('id', 'BillingStateProvince');
            jQuery('.OtherStateSpan').show();
        } else {
            jQuery('.OtherState').attr('disabled', 'disabled').removeAttr('id');
            jQuery('.OtherStateSpan').hide();
            jQuery('.USStates').removeAttr('disabled').attr('id', 'BillingStateProvince').show();
        }
    });
});