2 scripts identiques sur même page

[lynyrd]

bonjour à tous.
je ne connais absolument rien au langage javascript,et j'ai donc fait un copier_coller d'un script que j'ai trouvé sur le web(carrousel d'images).
pouvez vous m'expliquer quels parametres changer pour avoir les 2 carroussels sur la même page.
par avance,merçi.
voiçi le script.
<script language="JavaScript"><!--
// hide this script from non-JavaScript browsers

// All code in this script is Copyright(C) 1996, Justin Boyan, jab+j@cs.cmu.edu
// For documentation and more info, see: http://www.cs.cmu.edu/~jab/snark/
// This is SNARK Version 1.0, 18 May 1996

var MAX_ENGINES = 30;
var SNARK_STRING = "hunting+the+snark";

function MakeArray(n) {
for (var i = 1; i <= n; i++) {
this[i] = 0;
}
this.maxlen = n;
this.len = 0;
return this;
}

var engs = new MakeArray(MAX_ENGINES);

function find_substring(needle, haystack) {
var i, needlen = needle.length, haylen = haystack.length;
for (i=0; i<=haylen-needlen; i++) {
if (needle == haystack.substring(i,i+needlen))
return i;
}
return false;
}

function Engine(name, opts, home, search) {
var snark = find_substring(SNARK_STRING, search);
this.name = name;
this.opts = opts;
this.home = home;
this.pre_snark = search.substring(0,snark);
this.post_snark= search.substring(snark+SNARK_STRING.length, search.length);
}

function Add(name, opts, home, search) {
engs.len++;
if (engs.len <= engs.maxlen) {
engs[engs.len] = new Engine(name, opts, home, search)
}
else {
alert("Better increase MAX_ENGINES: " + engs.len + ">" + engs.maxlen)
}
}

// ADD YOUR OWN SEARCH ENGINES BELOW. (See http://www.cs.cmu.edu/~jab/snark/ )



Add("Netnews: AltaVista", "",
"http://altavista.digital.com/",
"http://altavista.digital.com/cgi-bin/query?pg=q&what=news&fmt=d&q=hunting+the+snark" );

Add("Shareware/Windows", "",
"http://vsl.cnet.com/",
"http://vsl.cnet.com/cgi-bin/vsl-master/Find?category=MS-Windows%28all%29&search=hunting+the+snark&logop=and&and=&orfile=++&hits=200" );

Add("Shareware/Unix", "",
"http://vsl.cnet.com/",
"http://vsl.cnet.com/cgi-bin/vsl-master/Find?category=UNIX&search=hunting+the+snark&logop=and&and=&orfile=++&hits=200" );

Add("the Web: AltaVista", "SELECTED",
"http://altavista.digital.com/",
"http://altavista.digital.com/cgi-bin/query?pg=q&what=web&fmt=d&q=hunting+the+snark" );

Add("the Web: Lycos", "",
"http://www.lycos.com/",
"http://twelve.srv.lycos.com/cgi-bin/pursuit?query=hunting+the+snark" );

Add("the Web: Yahoo!", "",
"http://www.yahoo.com/",
"http://search.yahoo.com/bin/search?p=hunting+the+snark" );

Add("Weather (City, ST)", "",
"http://www.nnic.noaa.gov/cgi-bin/page?pg=netcast",
"http://www.nnic.noaa.gov/cgi-bin/netcast.do-it?state=hunting+the+snark&area=Local+Forecast&html=yes&match=strong");



// ADD YOUR OWN SEARCH ENGINES ABOVE. (See http://www.cs.cmu.edu/~jab/snark/ )

function HandleForm(form) {
form.submit(); // This fixes a mysterious Netscape bug. Without this line,
// you can't use <enter> to start the search the first time.
var i, oldq=form.query.value, newq="";
for (i=0; i<oldq.length; i++) { // compress [ ]+ into \+
var thischar = oldq.charAt(i);
if (thischar != ' ')
newq += thischar;
else if (lastchar != ' ')
newq += '+';
lastchar = thischar;
}
var eng = engs[1+form.service.selectedIndex];
location.href = newq ? eng.pre_snark + newq + eng.post_snark : eng.home;
}

function DisplayForm() {
document.writeln('<CENTER><FORM OnSubmit="HandleForm(this); return false">');
document.writeln('Avec <SELECT name="service">');
for (i=1; i <= engs.len; i++) {
document.writeln("<OPTION " + engs[i].opts + "> " + engs[i].name);
}
document.writeln('</SELECT> rechercher <INPUT size=26 name="query">');
document.writeln('<input type=submit value=" GO!">');
document.writeln('</FORM> </CENTER>');
}

DisplayForm();

// done hiding from old browsers
// --></script>