function UpdateAddress()
{
echo '<select name="streets" size="5" onchange="GetHouses(this.value)">';
StreetListing();
echo '</select>';
}
<sup><span id="message_help" class="help"></span></sup>
<label for="house">House Number:</label><br>
<input type="text" id="house" name="house" maxlength="4" size=4
onblur="validateNonEmpty(this, document.getElementById('house_help'))"> <sup>*</sup><br>
<span id="house_help" class="help"></span>
<label for="street">Street:</label><br>
<!--<input type="text" id="street" name="street" maxlength="50" size="50"
onblur="validateNonEmpty(this, document.getElementById('street_help'));"> <sup>*</sup><br>
<span id="street_help" class="help"></span>-->
<select name="street">
<?php
StreetListing();
?>
</select>
<?php
StreetListing();
?>
<sup>*</sup><br>
<label for="suffix">Suffix:</label><br>
<input type="text" id="suffix" name="suffix" maxlength="4"><br>
<label for="apt">Apartment:</label><br>
<input type="text" id="apt" name="apt" maxlength="4"><br>
<label for="city">City:</label><br>
<input type="text" id="city" name="city" maxlength="30" onblur="validateNonEmpty(this);"> <sup>*</sup><br>
<label for="state">State:</label><br>
<input type="text" id="state" name="state" maxlength="2" onblur="validateNonEmpty(this);"> <sup>*</sup><br>
<label for="zip">ZIP:</label><br>
<select name="zip" id="zip">
<option id="1">14224</option>
<option id="2">14218</option>
<option id="3">14127</option>
