ciaocodice:<html> <head> <title>Untitled Document</title> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <script language:javascript> function dennis(){ var frm=document.fabio; if(frm.nome.value=="" || frm.email.value==""){ alert('HEila'); }else{ a=frm.email.value; b=a.split("@"); if(b.length!= 2 || b[0].length==0 || b[1].length==0){ alert('email non valida!'); }else{ document.fabio.submit(); } } } </script> </head> <body bgcolor="#FFFFFF"> <form method="post" action="invio.htm" name="fabio"> Nome <input type="text" name="nome"> Email <input type="text" name="email"> Messaggio <textarea name="messaggio" rows="5" cols=30></textarea> <input type="button" value="Invia" onclick="dennis()"> </form> </p></body> </html>

Rispondi quotando
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nn sto capendo + niente)
