Va bene..Grazie! adesso lo posto.

Home.php
codice:
<?php session_start(); ?>
<HTML>
<HEAD>
    <TITLE>Accesso</TITLE>
</HEAD>
<BODY>
    
    <?php
        if($_SESSION['Accesso']!=1){
    ?>
        <form style="margin-top:40px;" action="AreaEle.php?p=Home" method="POST" name="Login">
        <table border="0">
           <tr><td>Tipo:</td><td>
           <select name="TipoUtente">
              <option value="Amministratore" selected>Amministratore</option>
              <option value="Meccanico">Meccanico</option>
              <option value="Magazzino">Magazziniere</option>
           </select>
           </td></tr>
           <td>Login:</td><td><input type="text" name="log"> </td>
           <tr><td>Password:</td><td> <input type="password" name="pass"></td></tr>
           <tr><td align="center" colspan="2">
               <input type="submit" name="sub" value="INVIA"/></td>
           </tr>
        </table>
        </form>
    <?php }          
        if (isset($_POST['log']) && isset($_POST['pass'])){

           //Connessione al DB

           mysql_connect('localhost','root','root');
           mysql_select_db('Utenti');
           $query = "select * from Utente where Login = '".$_POST['log']."' ";
           $results = mysql_query($query)
                   or die (mysql_error());
           if(mysql_affected_rows() == 1){
               $dati = mysql_fetch_row($results);
               if(($_POST['pass'])==$dati[1]){
                   $_SESSION['Accesso'] = 1;
               }else{
                   $_SESSION['Accesso'] = 0;
                   echo"Password errata!Riprova";
               }
           }else
               echo"Non esiste l'utente";
        }
        if($_SESSION['Accesso'] == 1){
           $_SESSION['Nome'] = $dati[2];
           $_SESSION['Cognome'] = $dati[3];
           echo "<SCRIPT Language=Javascript>";
           echo "window.location ='AreaEle.php?p=InseClienti' ";
           echo "</SCRIPT>";
        }
        mysql_close();
    ?>
</BODY>
</HTML>
AreaEle.php

codice:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<?php session_start();
    echo" ".$_SESSION['Accesso']." ";
?>
<html>
<head>
<title>AREAELETTIVA</title>
<link rel="stylesheet" type="text/css" href="Areacss.css" /> 
</head>
<body>
<div id="backgroundLayer" >
    <div id=PRINCIPALE >
        <div id="menu">
        <ul>[*]Home
[*]Amministrazione
                <ul>[*]Clienti & Auto[*]Visualizza Clienti[/list]
            [*]Officina
                <ul>[*]Nuova commessa[*]Visualizza commesse[/list]
            [*]Magazzino
                <ul>[*]Visualizza Prodotti[/list]
            [/list]
        </div>
        <div id="divlogin">
                <?php
                   if($_SESSION['Accesso'] == 1){
                     echo "On-line : ". $_SESSION['Nome'] ." ".$_SESSION['Cognome']." ";
                ?>
                   <input style="width:100px" type="submit" value="LOGOUT">
                <?php
                  }else
                     echo"Effettua il login :";
                ?>
        </div>
        <div id="frame" align="center">
            <?php
            if (isset($_GET['p']) && $_GET['p']) {
               if (is_file($_GET['p'].'.php')) require_once($_GET['p'].'.php');
            }else
                require_once('Home.php');
            ?>
        </div>
    </div>
</div>
</body>
</html>