//<--
function OG_ImgAlert(form) {
 	var email = document[form].email.value;
	var input=document[form].email;
	var lemail = document.getElementById("lemail");
	var email_reg_exp = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-]{2,})+\.)+([a-zA-Z0-9]{2,})+$/;
	
	var nome = document[form].nome.value;
	var inputn=document[form].nome;
	var lnome = document.getElementById("lnome");
 		
	var cognome = document[form].cognome.value;
	var inputcn=document[form].cognome;
	var lcognome = document.getElementById("lcognome");
	
	var eemail="";
	var enome="";
	var ecognome="";
	
	if (email!="") {
  		if (!email_reg_exp.test(email)) {
		   input.className="red";
		   lemail.className="errorv";
		   input.focus();
		   input.select();
        }
		 else { 
		   input.className="norm";
		   eemail = "ok";
        }
	}
	 else {
		   input.className="red";
		   lemail.className="errorv";
		   input.focus();
		   input.select();
	}
	
	if (nome!="" && nome!="nome") {
	   inputn.className="norm";
	   enome = "ok";
	}
	 else {
	   inputn.className="red";
	   lnome.className="errorv";
	   inputn.focus();
	   inputn.select();
	}
	
	if (cognome!="" && cognome!="cognome") {
	   inputcn.className="norm";
	   ecognome = "ok";
	}
	 else {
	   inputcn.className="red";
	   lcognome.className="errorv";
	   inputcn.focus();
	   inputcn.select();
	}

	if (eemail=="ok" && enome=="ok" && ecognome=="ok") {
		lemail.className="error";
		lnome.className="error";
		lcognome.className="error";
		document[form].submit();
	}
}
//-->