Updated a selector to match only the first occurrence of #phone.

It's a hack but so is their HTML:

> <div class="grid_6">
> 	<input type="hidden" value="Please enter your Phone Number." name="phone_required"/>			
> 	<input name="phone" id="phone"  type="text" maxlength="100"  size="30"  class="input-text"  />
> </div>
> 
> <!-- ... -->
> 
> <div class="grid_6">		
> 	<input name="phone" id="phone"  type="text" maxlength="100"  size="30"  class="input-text"  />
> </div>