$(document).ready(function() {
    $('#frontendform').submit(function(){
        MailManSignUp();
        return false;
    });
})
function MailManSignUp()
{
      if ($("#emailInput").val() == "")
	  {
          alert("Enter email!");
      }
	  else
	  {
          $.ajax({
                type: "POST",
                url: "/wp-content/plugins/mailman_signup/mailman_signup.php",
                data: "show=AddToList&email="+$("#emailInput").val(),
                beforeSend: function(object){
					$("#resultado").html('<img  src="/wp-content/themes/littleendian/images/ajax-loader2.gif" >');
                },
                success: function(data){
                    $("#resultado").html(data);
                }
          });
     }
}