Update jquery.customSelect.js

I extended the custom-select with an inline caption. The "empty" option (or option with no value) can still be empty, but you can provide "getCaption" function to determine the caption of the custom-select:

$("selector").customSelect({ getCaption: function(sender)
{
   switch (sender[0].id)
   {
      case "name":
         return "Last name";
      case "address":
         return "Address";
   }
}
});