$(document).ready(function() { 
                               setValidator();
                              
                             });
  
  

function setValidator()
{
  if ($("#mainForm"))
  {
    $("#mainForm").validate();
    $("#mainForm #alt_address").click(function() {
                                          if ($("#mainForm #alt_address").attr("checked") == true)
                                            $("#mainForm #request-alt").fadeIn(300);
                                          else
                                            $("#mainForm #request-alt").fadeOut(300);
                                      });
  }
}