$(document).ready(function() {
  $('#survey-simpan').click( function(e) {
           var filtername  = /[a-z]/;
 	   var filteremail = /^([a-zA-Z0-9_.-])+@(([a-zA-Z0-9-])+.)+([a-zA-Z0-9]{2,4})+$/;
           //var filterphone = /^(\+\d)*\s*(\(\d{3}\)\s*)*\d{3}(-{0,1}|\s{0,1})\d{2}(-{0,1}|\s{0,1})\d{2}$/;
           var filterphone = /\d/;
           var filterage = /^\d{2}$/;
           
           var nama  = $('#nama').val();
           var email = $('#email').val();
           var phone = $('#telp').val();
           var age = $('#usia').val();
           
           var error = false;
	   var str = 'Harap cek kembali :\n';
           if(!filtername.test( nama ) ) {
              str += '-nama \n';
              $('#nama').addClass('red');
              $('#nama').focus();
              error = true;
           }
           if(!filterage.test( age ) ) {
              str += '-usia \n';
              $('#usia').addClass('red');
              $('#usia').focus();
              error = true;
           }
           if(!filterphone.test(phone)) {
              str += '-telepon \n';
	      $('#telp').addClass('red');
              $('#telp').focus();
              error = true;
           }
	   if(!filteremail.test(email)) {
	      str += '-email \n';
              $('#email').addClass('red');
              $('#email').focus();
              error = true;
	   }
           if( error == true ) {
	      alert( str );
              e.preventDefault();
              return false;
           }
	   return true;
          
   });
});