$(document).ready(function(){
    $("#valid").validate({  
        rules: {
            name: {
                required: true,
                minlength: 5
                },
			 content: {
                required: true,
                minlength: 8
                },
			email: {
				required: true,
				email: true
				}
		},
        messages: {
            name:{
                required: " *",
                minlength: " *"
            },
            content:{
                required: " *",
                minlength: " *"
                },
			email: {
				required: " *",
				minlength: " *",
			}
        },
		success: function(label) {
			label.html(" ").addClass("sprawdzony");
		}

  });
});