$(document).ready(function(){
 $("#submit_btn").click(function(event) {
						   nome = trim($("#author").val());
						   email =trim($("#email").val());
						   testo = trim($("#comment").val());
						   errors = false;
						   
						   output = "Attenzione, ricontrollare i campi obbligatori!";
						   if ((nome == '')) {
						 	errors = true;
							$("#author").css("background-color","#feabab");
						   } 
						   if ((email == '') ||(email.indexOf('@') <= 0)) { 
						   errors = true;
						   $("#email").css("background-color","#feabab");
						   }
						   if (nome.toLowerCase() =='admin') {
						   	errors = true;
						   $("#author").css("background-color","#feabab");
						   
						   } 
						   if(testo == "") {
						   	errors=true;
						   	$("#comment").css("background-color","#feabab");
							}
						   
						   if (errors) {
						   	$("#comment_alert").html(output);
						   	$("#comment_alert").fadeOut("fast");
						   	$("#comment_alert").fadeIn(1000);
							
						   }else {
						   	$("#comment_alert").fadeOut("fast");
							document.commentform.submit();
						   }
				
						   
						   });
						   
$(".comment_input").focus(function(){$(this).css("background-color","#fff");})
$("#comment").focus(function(){$(this).css("background-color","#fff");})

});