$(document).ready(function () {
    $("#test").change(function(){
      alert($(this).val());
      var info = $.trim($(this).val());
        $.ajax({
          type: "POST",
          url: "/cgi-bin/upload_and_check.cgi",
          data: "filename="+info+"&session_id=abc",
          success: function(msg){             		 
            alert("This is the message: " + msg);
            $("#output").html(msg);
            $.jGrowl(msg, { sticky: true });
          }
       });
    }); 	
});