Con Google Chrome dove la trovo? Comunque intendi così:
codice:
<html>

<head>
<title>Guestbook</title> </head>

<body>

<link rel="stylesheet" href="guestbook.css" type="text/css" />
<form id=lol action = "post.php"  method = "POST"> 

<div id="form">

    

       <label for="Nickname">Nickname</label>

      <input id="Nickname" name="Nickname" type="name" required="required" />
      <label for="Messaggio">Messaggio</label>

      <textarea name="Messaggio" id="messaggio" cols="30" rows="50"></textarea>

       



  

  <center><input type="submit" id="submit" name="submit" value="Invia" /></center>

  



</div>

</form>

 <script language="JavaScript">

function Notifiche() {

	var button = document.getElementById('button');

    var e = document.getElementById("notifiche");

    if (e.style.visibility == 'hidden') {

        e.style.visibility = 'visible';

        e.style.display = 'block';

		var num = "0" ;

		button.value= num;

		button.style.background = '#1C1C1C';

		button.style.color = '#FFFFFF';

		} 

		else {

        e.style.visibility = 'hidden';

        e.style.display = 'none';

		var num = "0" ;

		button.value= num;

    }

}

								 



ips=new Array(); 

	

ips[0]='127.0.0.1';

	

ips[1]='127.0.0.1';



msgs=new Array(); 

	

msgs[0]='prova';

	

msgs[1]='jhjkh';



nicks=new Array(); 

	

nicks[0]='Giulio';

	

nicks[1]='vljvhkj';



ora=new Array(); 

	

ora[0]='11.06  10/01/2012'; 

	

ora[1]='11.07  10/01/2012'; 



ss_1=new Array(); 

	

ss_1[0]='

'; 

	

ss_1[1]='

'; 



ss_2=new Array(); 

	

ss_2[0]='<table border="0" widht="40px" id="box" > '; 

	

ss_2[1]='<table border="0" widht="40px" id="box" > '; 



ss_3=new Array(); 

	

ss_3[0]='<tr><td>[img]User.png[/img]</td>  <td>'; 

	

ss_3[1]='<tr><td>[img]User.png[/img]</td>  <td>'; 



ss_4=new Array(); 

	

ss_4[0]='</td><tr><td>[img]message.png[/img]  </td><td>'; 

	

ss_4[1]='</td><tr><td>[img]message.png[/img]  </td><td>'; 



ss_5=new Array(); 

	

ss_5[0]='</td><tr><td>[img]clock.png[/img]  </td><td>'; 

	

ss_5[1]='</td><tr><td>[img]clock.png[/img]  </td><td>'; 



ss_6=new Array(); 

	

ss_6[0]='</div></td><tr><td>[img]net.png[/img]  </td><td>'; 

	

ss_6[1]='</div></td><tr><td>[img]net.png[/img]  </td><td>'; 



ss_7=new Array(); 

	

ss_7[0]="</td></tr><tr></tr><tr></tr><tr></tr></table></br></br></div>"; 

	

ss_7[1]="</td></tr><tr></tr><tr></tr><tr></tr></table></br></br></div>"; 



var ip = '127.0.0.1';

alert(nicks[1]);

</script>

<hr style="layout-flow:vertical-ideographic; position:relative;">



<script language="javascript" type="text/javascript">

function control(i);

{

	var ip_post = ips[i] ;

	var nick = nicks[i] ;

	var msg = msgs[i];

	var hour = ora[i] ; 

	var s_1 = ss_1[i] ;

	var s_2 = ss_2[i] ;

	var s_3 = ss_3[i] ;

	var s_4 = ss_4[i] ;

	var s_5 = ss_5[i] ;

	var s_6 = ss_6[i] ;

	var s_7 = ss_7[i] ;

	var post = new Array() ; 

	post[0] = s_1 ;

	post[2] = s_3 ;

	post[3] = nick ; 

	post[4] = s_4 ;

	post[5] = msg ; 

	post[6] = s_5 ;

	post[7] = hour ;

	post[8] = s_6 ;

	post[9] = ip ;

	post[10] = s_7 ;

	if ( ip_post == '127.0.0.1' );

	{	

		post[1] = '<table border="0" widht="40px" id="box" style="background:#FFFFFF;" >';

		return post ;

		}

	else 

	{

		post[1] = '<table border="0" widht="40px" id="box" style="background:#1C1C1C;" >';

		return post ;

		}

	}

	

//for (k = ips.length ; k >= 0 ; k--);

for (k =0 ; k <= ips.length ; k++);

{

	tiprego = new Array();

	tiprego = control(k);

	alert(tiprego.length);

	document.write(tiprego[1])

	for (j = 0 ;  j < 11 ; j++);

	{ document.write(tiprego[j]); }

	}

</script>

</body>

</html>