aggiungi il codice in grassetto
codice:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> 
 
<HTML><HEAD><TITLE>Esempi java script: esempio pratico</TITLE> 
<META http-equiv=Content-Type content="text/html; charset=iso-8859-1"> 
<SCRIPT language=javascript src="passssssss_file/js"></SCRIPT> 
<!-- Codice scaricato gratuitamente da HTML.it, il sito italiano sul Web publishing 
http://www.html.it --> 
<SCRIPT language=JavaScript> 


function hidden(){ 
var location=document.input.password.value + ".htm"; 
this.location.href = location; 
} 
// -- End Hiding Here 
// --> 

function tasti() {
	if (window.event.keyCode==13 ) {
		btnEnter.click()		
	}
	
}
window.document.onkeydown=tasti

</SCRIPT> 

<META content="Microsoft FrontPage 5.0" name=GENERATOR></HEAD> 
<BODY bgColor=white> 
<FORM name=input> 
<DIV align=center> 
<CENTER> 
<TABLE borderColor=#000000 borderColorDark=#000000 width=200 bgColor=#808080 
borderColorLight=#000000 border=2> 
<TBODY> 
<TR> 
<TD borderColor=#000000 borderColorLight=#000000 align=middle 
bgColor=#808080 borderColorDark=#000000> 
<TABLE border=0> 
<TBODY> 
<TR> 
<TD><FONT color=#000000>Password:</FONT></TD></TR> 
<TR> 
<TD><INPUT size=25 name=password> </TD></TR> 
<TR> 
<TD align=right><INPUT onclick=hidden() id="btnEnter" type=button value=Enter> 
</TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE></CENTER></DIV></FORM> 
<DIV align=center> 
<TABLE width=400 border=0> 
<TBODY> 
<TR> 
<TD> 
<DIV align=center><FONT face="Arial, Helvetica, sans-serif">USA QUESTE 
DUE PASSWORD</FONT></DIV></TD></TR></TBODY></TABLE></DIV> 
<DIV align=center> 
<TABLE width=400 border=0> 
<TBODY> 
<TR> 
<TD> 
<DIV align=center><FONT 
face="Arial, Helvetica, sans-serif">pass</FONT></DIV></TD> 
<TD> 
<DIV align=center><FONT 
face="Arial, Helvetica, sans-serif">pass2</FONT></DIV></TD></TR></TBODY></TABLE></DIV> 
<DIV style="LEFT: 150px; POSITION: absolute; TOP: 350px"> 
<SCRIPT language=JAVASCRIPT> 
<!-- 
var browName = navigator.appName; 
var browDateTime = (new Date()).getTime(); 
var browVersion = parseInt(navigator.appVersion); 
var ua=navigator.userAgent.toLowerCase(); 
var adcode=''; 
if (browName=='Netscape'){ 
if (browVersion>=5) 
{ document.write('<ifr'+'ame src="http://ad.html.it/banman.asp?ZoneID=36&Task=Get&Browser=NETSCAPE6&X=' + browDateTime + '" width=468 height=60 Marginwidth=0 Marginheight=0 Hspace=0 Vspace=0 Frameborder=0 Scrolling=No></ifr'+'ame>'); } 
else if ((browVersion>=4)&&(ua.indexOf("mac")==-1)) 
{ document.write('<S'+'CRIPT src="http://ad.html.it/banman.asp?ZoneID=36&Task=Get&Browser=NETSCAPE4">'); 
document.write('</'+'scr'+'ipt>'); 
document.write(adcode); } 
else if (browVersion>=3) 
{ document.write(''); } } 
if (browName=='Microsoft Internet Explorer') 
{ document.write('<ifr'+'ame src="http://ad.html.it/banman.asp?ZoneID=36&Task=Get&X=' + browDateTime + '" width=468 height=60 Marginwidth=0 Marginheight=0 Hspace=0 Vspace=0 Frameborder=0 Scrolling=No></ifr'+'ame>'); } 
// --> 
</SCRIPT> 
<NOSCRIPT> 
[img]passssssss_file/pb.gif[/img]</NOSCRIPT></DIV> 
<SCRIPT language=javascript>postamble();</SCRIPT> 
</BODY></HTML>

ciao