$(document).ready(function(){
  $("#contact_form").bind("submit", function() {
  
    var return_value = true;
    
    if ($("#input_name").val().length < 4) {
        $("#err_name").css("display","block");
        return_value = false;
    }
    else{ 
      $("#err_name").css("display","none");
    }
    
    if ($("#input_email").val().length < 7) {
        $("#err_email").css("display","block");
        return_value = false;
    }
    else{
      $("#err_email").css("display","none");
    }
    
    if ($("#input_text").val().length < 10) {
        $("#err_text").css("display","block");
        return_value = false;
    }
    else{
      $("#err_text").css("display","none");
    }
    if(return_value){
      $.ajax({
        type		: "POST",
        cache	: false,  
        dataType: 'json',
        url		: "/themes/prestashop/ajax/contactForm.php",
        data		: $(this).serializeArray(),
        success: function(data) {
          if(data.message_sent){
            $('#err_name').remove();
            $('#err_email').remove();
            $('#err_text').remove();
            $('#contact_form').remove();
            $('#message_sent').css("display","block");
          }
          else{
            if(data.name_err){
              $("#err_name").css("display","block");
            }
            if(data.email_err){
              $("#err_email").css("display","block");
            }
            if(data.text_err){
              $("#err_text").css("display","block");
            }
          }
        }
      });
    }
    return false;
  });
});